./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-atomic/dekker.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:46:21,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:46:21,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:46:21,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:46:21,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:46:21,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:46:21,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:46:21,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:46:21,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:46:21,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:46:21,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:46:21,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:46:21,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:46:21,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:46:21,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:46:21,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:46:21,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:46:21,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:46:21,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:46:21,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:46:21,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:46:21,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:46:21,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:46:21,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:46:21,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:46:21,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:46:21,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:46:21,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:46:21,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:46:21,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:46:21,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:46:21,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:46:21,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:46:21,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:46:21,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:46:21,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:46:21,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:46:21,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:46:21,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:46:21,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:46:21,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:46:21,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:46:21,435 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:46:21,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:46:21,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:46:21,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:46:21,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:46:21,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:46:21,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:46:21,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:46:21,438 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:46:21,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:46:21,439 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:46:21,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:46:21,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:46:21,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:46:21,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:46:21,440 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:46:21,440 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:46:21,440 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:46:21,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:46:21,440 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:46:21,440 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:46:21,440 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:46:21,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:46:21,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:46:21,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:46:21,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:46:21,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:46:21,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:46:21,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:46:21,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:46:21,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:46:21,442 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:46:21,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:46:21,442 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:46:21,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:46:21,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:46:21,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:46:21,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:46:21,715 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:46:21,715 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:46:21,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2023-08-29 19:46:22,517 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:46:22,701 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:46:22,702 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2023-08-29 19:46:22,715 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2010de65/ecbc4fdc18b54f68abc7286dd319364c/FLAG28e8dd505 [2023-08-29 19:46:22,725 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2010de65/ecbc4fdc18b54f68abc7286dd319364c [2023-08-29 19:46:22,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:46:22,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:46:22,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:46:22,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:46:22,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:46:22,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:46:22" (1/1) ... [2023-08-29 19:46:22,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2448414a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:22, skipping insertion in model container [2023-08-29 19:46:22,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:46:22" (1/1) ... [2023-08-29 19:46:22,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:46:22,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:46:22,910 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 19:46:23,019 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2023-08-29 19:46:23,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2023-08-29 19:46:23,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:46:23,038 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:46:23,055 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 19:46:23,072 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2023-08-29 19:46:23,076 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2023-08-29 19:46:23,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:46:23,132 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:23,132 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:23,132 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:23,137 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:46:23,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23 WrapperNode [2023-08-29 19:46:23,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:46:23,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:46:23,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:46:23,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:46:23,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,189 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-08-29 19:46:23,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:46:23,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:46:23,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:46:23,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:46:23,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:46:23,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:46:23,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:46:23,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:46:23,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (1/1) ... [2023-08-29 19:46:23,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:46:23,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:23,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:46:23,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:46:23,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 19:46:23,290 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-29 19:46:23,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 19:46:23,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:46:23,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:46:23,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:46:23,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:46:23,293 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:46:23,431 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:46:23,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:46:23,629 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:46:23,633 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:46:23,633 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-29 19:46:23,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:23 BoogieIcfgContainer [2023-08-29 19:46:23,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:46:23,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:46:23,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:46:23,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:46:23,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:46:22" (1/3) ... [2023-08-29 19:46:23,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2621d237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:46:23, skipping insertion in model container [2023-08-29 19:46:23,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:23" (2/3) ... [2023-08-29 19:46:23,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2621d237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:46:23, skipping insertion in model container [2023-08-29 19:46:23,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:23" (3/3) ... [2023-08-29 19:46:23,643 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2023-08-29 19:46:23,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:46:23,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 19:46:23,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:46:23,721 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 19:46:23,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 240 flow [2023-08-29 19:46:23,792 INFO L130 PetriNetUnfolder]: 13/110 cut-off events. [2023-08-29 19:46:23,792 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:46:23,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 110 events. 13/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 181 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-29 19:46:23,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 112 transitions, 240 flow [2023-08-29 19:46:23,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 106 transitions, 224 flow [2023-08-29 19:46:23,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:46:23,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 106 transitions, 224 flow [2023-08-29 19:46:23,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 106 transitions, 224 flow [2023-08-29 19:46:23,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 106 transitions, 224 flow [2023-08-29 19:46:23,847 INFO L130 PetriNetUnfolder]: 13/106 cut-off events. [2023-08-29 19:46:23,847 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:46:23,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 13/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 180 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-29 19:46:23,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2023-08-29 19:46:25,960 INFO L134 LiptonReduction]: Checked pairs total: 8187 [2023-08-29 19:46:25,961 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-29 19:46:25,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:46:25,973 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;@2efddf30, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:46:25,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-29 19:46:25,974 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:46:25,974 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:46:25,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:25,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:46:25,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:25,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:25,978 INFO L85 PathProgramCache]: Analyzing trace with hash 455, now seen corresponding path program 1 times [2023-08-29 19:46:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916458725] [2023-08-29 19:46:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:26,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:26,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916458725] [2023-08-29 19:46:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916458725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:26,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:26,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:46:26,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043369890] [2023-08-29 19:46:26,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:26,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:46:26,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:46:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:46:26,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 201 [2023-08-29 19:46:26,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:26,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 201 [2023-08-29 19:46:26,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:26,205 INFO L130 PetriNetUnfolder]: 892/1479 cut-off events. [2023-08-29 19:46:26,205 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-08-29 19:46:26,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1479 events. 892/1479 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7732 event pairs, 612 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 2594. Up to 1304 conditions per place. [2023-08-29 19:46:26,212 INFO L137 encePairwiseOnDemand]: 199/201 looper letters, 35 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2023-08-29 19:46:26,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 168 flow [2023-08-29 19:46:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:46:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:46:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 239 transitions. [2023-08-29 19:46:26,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945273631840796 [2023-08-29 19:46:26,221 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 239 transitions. [2023-08-29 19:46:26,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 239 transitions. [2023-08-29 19:46:26,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:26,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 239 transitions. [2023-08-29 19:46:26,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,228 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,229 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 102 flow. Second operand 2 states and 239 transitions. [2023-08-29 19:46:26,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 168 flow [2023-08-29 19:46:26,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 160 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 19:46:26,232 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 90 flow [2023-08-29 19:46:26,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-29 19:46:26,235 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-08-29 19:46:26,235 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 90 flow [2023-08-29 19:46:26,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:26,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:46:26,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:46:26,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:26,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash 449011, now seen corresponding path program 1 times [2023-08-29 19:46:26,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:26,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013245987] [2023-08-29 19:46:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:26,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:26,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:26,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013245987] [2023-08-29 19:46:26,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013245987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:26,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:26,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:26,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51064567] [2023-08-29 19:46:26,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:26,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:26,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:26,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:26,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-08-29 19:46:26,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:26,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-08-29 19:46:26,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:26,466 INFO L130 PetriNetUnfolder]: 867/1431 cut-off events. [2023-08-29 19:46:26,466 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:46:26,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 1431 events. 867/1431 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7401 event pairs, 594 based on Foata normal form. 0/848 useless extension candidates. Maximal degree in co-relation 2700. Up to 1258 conditions per place. [2023-08-29 19:46:26,472 INFO L137 encePairwiseOnDemand]: 197/201 looper letters, 31 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-29 19:46:26,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 152 flow [2023-08-29 19:46:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-08-29 19:46:26,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157545605306799 [2023-08-29 19:46:26,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-08-29 19:46:26,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-08-29 19:46:26,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:26,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-08-29 19:46:26,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,477 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 90 flow. Second operand 3 states and 311 transitions. [2023-08-29 19:46:26,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 152 flow [2023-08-29 19:46:26,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:46:26,479 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 90 flow [2023-08-29 19:46:26,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, 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=90, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-08-29 19:46:26,479 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-08-29 19:46:26,479 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 90 flow [2023-08-29 19:46:26,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:26,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:46:26,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:46:26,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:26,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:26,481 INFO L85 PathProgramCache]: Analyzing trace with hash 449013, now seen corresponding path program 1 times [2023-08-29 19:46:26,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:26,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428073892] [2023-08-29 19:46:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:26,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:26,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428073892] [2023-08-29 19:46:26,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428073892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:26,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858532355] [2023-08-29 19:46:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:26,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:26,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:26,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:26,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 201 [2023-08-29 19:46:26,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:26,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 201 [2023-08-29 19:46:26,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:26,702 INFO L130 PetriNetUnfolder]: 842/1383 cut-off events. [2023-08-29 19:46:26,702 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:46:26,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 1383 events. 842/1383 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7127 event pairs, 576 based on Foata normal form. 0/830 useless extension candidates. Maximal degree in co-relation 2610. Up to 1214 conditions per place. [2023-08-29 19:46:26,707 INFO L137 encePairwiseOnDemand]: 197/201 looper letters, 29 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-29 19:46:26,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 148 flow [2023-08-29 19:46:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-29 19:46:26,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174129353233831 [2023-08-29 19:46:26,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-29 19:46:26,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-29 19:46:26,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:26,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-29 19:46:26,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,712 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 90 flow. Second operand 3 states and 312 transitions. [2023-08-29 19:46:26,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 148 flow [2023-08-29 19:46:26,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:26,713 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 86 flow [2023-08-29 19:46:26,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-08-29 19:46:26,715 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-08-29 19:46:26,715 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 86 flow [2023-08-29 19:46:26,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:26,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:46:26,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:46:26,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:26,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:26,716 INFO L85 PathProgramCache]: Analyzing trace with hash 431511258, now seen corresponding path program 1 times [2023-08-29 19:46:26,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:26,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77813695] [2023-08-29 19:46:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:26,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:26,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77813695] [2023-08-29 19:46:26,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77813695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:26,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:26,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:46:26,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518128560] [2023-08-29 19:46:26,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:26,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:46:26,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:46:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:46:26,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 201 [2023-08-29 19:46:26,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:26,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 201 [2023-08-29 19:46:26,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:26,928 INFO L130 PetriNetUnfolder]: 621/1039 cut-off events. [2023-08-29 19:46:26,929 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:46:26,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 1039 events. 621/1039 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5111 event pairs, 418 based on Foata normal form. 0/665 useless extension candidates. Maximal degree in co-relation 1962. Up to 910 conditions per place. [2023-08-29 19:46:26,933 INFO L137 encePairwiseOnDemand]: 198/201 looper letters, 28 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-29 19:46:26,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 144 flow [2023-08-29 19:46:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-08-29 19:46:26,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892205638474295 [2023-08-29 19:46:26,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-08-29 19:46:26,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-08-29 19:46:26,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:26,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-08-29 19:46:26,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,940 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 86 flow. Second operand 3 states and 295 transitions. [2023-08-29 19:46:26,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 144 flow [2023-08-29 19:46:26,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:26,942 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 84 flow [2023-08-29 19:46:26,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-08-29 19:46:26,943 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -8 predicate places. [2023-08-29 19:46:26,943 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 84 flow [2023-08-29 19:46:26,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:26,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:26,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:46:26,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:46:26,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:26,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 431511259, now seen corresponding path program 1 times [2023-08-29 19:46:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:26,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662835997] [2023-08-29 19:46:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:26,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:26,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662835997] [2023-08-29 19:46:26,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662835997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:26,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:26,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:26,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208416352] [2023-08-29 19:46:26,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:26,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:26,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:26,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:26,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:27,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 201 [2023-08-29 19:46:27,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:27,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 201 [2023-08-29 19:46:27,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:27,056 INFO L130 PetriNetUnfolder]: 400/695 cut-off events. [2023-08-29 19:46:27,056 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 19:46:27,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 695 events. 400/695 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3205 event pairs, 260 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1314. Up to 606 conditions per place. [2023-08-29 19:46:27,059 INFO L137 encePairwiseOnDemand]: 198/201 looper letters, 27 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-29 19:46:27,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 140 flow [2023-08-29 19:46:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-29 19:46:27,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124378109452736 [2023-08-29 19:46:27,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-29 19:46:27,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-29 19:46:27,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:27,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-29 19:46:27,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,063 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 84 flow. Second operand 3 states and 309 transitions. [2023-08-29 19:46:27,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 140 flow [2023-08-29 19:46:27,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:27,064 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 82 flow [2023-08-29 19:46:27,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-29 19:46:27,066 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -9 predicate places. [2023-08-29 19:46:27,066 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 82 flow [2023-08-29 19:46:27,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:27,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 19:46:27,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:46:27,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:27,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash 490761154, now seen corresponding path program 1 times [2023-08-29 19:46:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:27,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237810763] [2023-08-29 19:46:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:27,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237810763] [2023-08-29 19:46:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237810763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:27,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:46:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956062390] [2023-08-29 19:46:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:27,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:27,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:27,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:27,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 201 [2023-08-29 19:46:27,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:27,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 201 [2023-08-29 19:46:27,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:27,156 INFO L130 PetriNetUnfolder]: 401/720 cut-off events. [2023-08-29 19:46:27,156 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 19:46:27,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 720 events. 401/720 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3457 event pairs, 155 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 1364. Up to 400 conditions per place. [2023-08-29 19:46:27,159 INFO L137 encePairwiseOnDemand]: 196/201 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-29 19:46:27,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 208 flow [2023-08-29 19:46:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-29 19:46:27,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-29 19:46:27,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-29 19:46:27,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-29 19:46:27,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:27,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-29 19:46:27,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,163 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 82 flow. Second operand 3 states and 335 transitions. [2023-08-29 19:46:27,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 208 flow [2023-08-29 19:46:27,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:27,166 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 98 flow [2023-08-29 19:46:27,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-08-29 19:46:27,168 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-08-29 19:46:27,168 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 98 flow [2023-08-29 19:46:27,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:27,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:27,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:46:27,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:27,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash 313921491, now seen corresponding path program 1 times [2023-08-29 19:46:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:27,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899231295] [2023-08-29 19:46:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:27,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:27,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899231295] [2023-08-29 19:46:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899231295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:27,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:27,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:46:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113194495] [2023-08-29 19:46:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:27,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:27,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:27,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 201 [2023-08-29 19:46:27,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:27,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 201 [2023-08-29 19:46:27,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:27,274 INFO L130 PetriNetUnfolder]: 359/654 cut-off events. [2023-08-29 19:46:27,274 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-08-29 19:46:27,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 654 events. 359/654 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3091 event pairs, 157 based on Foata normal form. 28/586 useless extension candidates. Maximal degree in co-relation 1341. Up to 399 conditions per place. [2023-08-29 19:46:27,276 INFO L137 encePairwiseOnDemand]: 197/201 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-29 19:46:27,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 212 flow [2023-08-29 19:46:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-08-29 19:46:27,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522388059701493 [2023-08-29 19:46:27,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-08-29 19:46:27,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-08-29 19:46:27,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:27,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-08-29 19:46:27,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,281 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 98 flow. Second operand 3 states and 333 transitions. [2023-08-29 19:46:27,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 212 flow [2023-08-29 19:46:27,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:27,284 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 102 flow [2023-08-29 19:46:27,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-29 19:46:27,284 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-08-29 19:46:27,284 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 102 flow [2023-08-29 19:46:27,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:27,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:27,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:46:27,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:27,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash 811081477, now seen corresponding path program 1 times [2023-08-29 19:46:27,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:27,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789343137] [2023-08-29 19:46:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:27,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789343137] [2023-08-29 19:46:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789343137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:27,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:27,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:46:27,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491895547] [2023-08-29 19:46:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:27,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:46:27,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:46:27,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:46:27,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 201 [2023-08-29 19:46:27,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:27,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 201 [2023-08-29 19:46:27,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:27,448 INFO L130 PetriNetUnfolder]: 587/988 cut-off events. [2023-08-29 19:46:27,448 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2023-08-29 19:46:27,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 988 events. 587/988 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4744 event pairs, 123 based on Foata normal form. 16/827 useless extension candidates. Maximal degree in co-relation 2040. Up to 339 conditions per place. [2023-08-29 19:46:27,452 INFO L137 encePairwiseOnDemand]: 193/201 looper letters, 59 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-08-29 19:46:27,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 337 flow [2023-08-29 19:46:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:46:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:46:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2023-08-29 19:46:27,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343283582089552 [2023-08-29 19:46:27,453 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2023-08-29 19:46:27,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2023-08-29 19:46:27,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:27,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2023-08-29 19:46:27,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,456 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,456 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 102 flow. Second operand 5 states and 537 transitions. [2023-08-29 19:46:27,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 337 flow [2023-08-29 19:46:27,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:46:27,458 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 172 flow [2023-08-29 19:46:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-29 19:46:27,459 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-08-29 19:46:27,459 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 172 flow [2023-08-29 19:46:27,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:27,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:27,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:46:27,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:27,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1875127611, now seen corresponding path program 2 times [2023-08-29 19:46:27,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067153716] [2023-08-29 19:46:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:27,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:27,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:27,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067153716] [2023-08-29 19:46:27,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067153716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:27,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:27,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:46:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562291133] [2023-08-29 19:46:27,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:27,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:46:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:46:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:46:27,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 201 [2023-08-29 19:46:27,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:27,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 201 [2023-08-29 19:46:27,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:27,617 INFO L130 PetriNetUnfolder]: 798/1277 cut-off events. [2023-08-29 19:46:27,618 INFO L131 PetriNetUnfolder]: For 807/811 co-relation queries the response was YES. [2023-08-29 19:46:27,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1277 events. 798/1277 cut-off events. For 807/811 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5844 event pairs, 134 based on Foata normal form. 28/1157 useless extension candidates. Maximal degree in co-relation 3103. Up to 385 conditions per place. [2023-08-29 19:46:27,623 INFO L137 encePairwiseOnDemand]: 194/201 looper letters, 70 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2023-08-29 19:46:27,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 492 flow [2023-08-29 19:46:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:46:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:46:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-08-29 19:46:27,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293532338308458 [2023-08-29 19:46:27,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-08-29 19:46:27,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-08-29 19:46:27,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:27,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-08-29 19:46:27,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,627 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,627 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 172 flow. Second operand 5 states and 532 transitions. [2023-08-29 19:46:27,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 492 flow [2023-08-29 19:46:27,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 89 transitions, 484 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-29 19:46:27,631 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 221 flow [2023-08-29 19:46:27,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-29 19:46:27,632 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-08-29 19:46:27,632 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 221 flow [2023-08-29 19:46:27,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:27,632 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] [2023-08-29 19:46:27,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:46:27,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 19:46:27,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:27,633 INFO L85 PathProgramCache]: Analyzing trace with hash -123235730, now seen corresponding path program 1 times [2023-08-29 19:46:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:27,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862052259] [2023-08-29 19:46:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:27,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862052259] [2023-08-29 19:46:27,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862052259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:27,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:27,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:27,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420499927] [2023-08-29 19:46:27,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:27,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:27,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:27,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 201 [2023-08-29 19:46:27,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:27,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 201 [2023-08-29 19:46:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:27,881 INFO L130 PetriNetUnfolder]: 739/1212 cut-off events. [2023-08-29 19:46:27,881 INFO L131 PetriNetUnfolder]: For 1246/1259 co-relation queries the response was YES. [2023-08-29 19:46:27,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3281 conditions, 1212 events. 739/1212 cut-off events. For 1246/1259 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5798 event pairs, 343 based on Foata normal form. 14/1167 useless extension candidates. Maximal degree in co-relation 3268. Up to 1026 conditions per place. [2023-08-29 19:46:27,884 INFO L137 encePairwiseOnDemand]: 199/201 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-08-29 19:46:27,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 289 flow [2023-08-29 19:46:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-29 19:46:27,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174129353233831 [2023-08-29 19:46:27,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-29 19:46:27,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-29 19:46:27,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:27,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-29 19:46:27,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,887 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 221 flow. Second operand 3 states and 312 transitions. [2023-08-29 19:46:27,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 289 flow [2023-08-29 19:46:27,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:27,891 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-29 19:46:27,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-29 19:46:27,892 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-29 19:46:27,892 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-29 19:46:27,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:27,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2023-08-29 19:46:27,895 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2023-08-29 19:46:27,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:46:27,896 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:27,899 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:46:27,899 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:46:27,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:46:27 BasicIcfg [2023-08-29 19:46:27,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:46:27,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:46:27,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:46:27,902 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:46:27,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:23" (3/4) ... [2023-08-29 19:46:27,903 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 19:46:27,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-29 19:46:27,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-29 19:46:27,910 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-29 19:46:27,910 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 19:46:27,910 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 19:46:27,910 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 19:46:27,931 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 19:46:27,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:46:27,931 INFO L158 Benchmark]: Toolchain (without parser) took 5203.99ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 70.7MB in the beginning and 52.3MB in the end (delta: 18.4MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2023-08-29 19:46:27,931 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:46:27,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.68ms. Allocated memory is still 94.4MB. Free memory was 70.4MB in the beginning and 71.7MB in the end (delta: -1.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2023-08-29 19:46:27,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.32ms. Allocated memory is still 94.4MB. Free memory was 71.7MB in the beginning and 69.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:46:27,932 INFO L158 Benchmark]: Boogie Preprocessor took 41.17ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 68.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:46:27,932 INFO L158 Benchmark]: RCFGBuilder took 404.33ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 53.3MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 19:46:27,932 INFO L158 Benchmark]: TraceAbstraction took 4263.99ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 52.4MB in the beginning and 54.4MB in the end (delta: -2.0MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2023-08-29 19:46:27,932 INFO L158 Benchmark]: Witness Printer took 29.06ms. Allocated memory is still 142.6MB. Free memory was 54.4MB in the beginning and 52.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:46:27,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.68ms. Allocated memory is still 94.4MB. Free memory was 70.4MB in the beginning and 71.7MB in the end (delta: -1.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.32ms. Allocated memory is still 94.4MB. Free memory was 71.7MB in the beginning and 69.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.17ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 68.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.33ms. Allocated memory is still 94.4MB. Free memory was 68.1MB in the beginning and 53.3MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4263.99ms. Allocated memory was 94.4MB in the beginning and 142.6MB in the end (delta: 48.2MB). Free memory was 52.4MB in the beginning and 54.4MB in the end (delta: -2.0MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * Witness Printer took 29.06ms. Allocated memory is still 142.6MB. Free memory was 54.4MB in the beginning and 52.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 100 PlacesBefore, 46 PlacesAfterwards, 106 TransitionsBefore, 45 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 9 ConcurrentYvCompositions, 7 ChoiceCompositions, 89 TotalNumberOfCompositions, 8187 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4303, independent: 4025, independent conditional: 0, independent unconditional: 4025, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1312, independent: 1279, independent conditional: 0, independent unconditional: 1279, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4303, independent: 2746, independent conditional: 0, independent unconditional: 2746, dependent: 245, dependent conditional: 0, dependent unconditional: 245, unknown: 1312, unknown conditional: 0, unknown unconditional: 1312] , Statistics on independence cache: Total cache size (in pairs): 259, Positive cache size: 238, Positive conditional cache size: 0, Positive unconditional cache size: 238, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 780]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 739]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 789]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 144 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 595 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 800 IncrementalHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 54 mSDtfsCounter, 800 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=9, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 19:46:27,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE