./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-wmm/safe019_rmo.opt.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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:39:42,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:39:42,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:39:42,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:39:42,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:39:42,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:39:42,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:39:42,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:39:42,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:39:42,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:39:42,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:39:42,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:39:42,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:39:42,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:39:42,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:39:42,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:39:42,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:39:42,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:39:42,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:39:42,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:39:42,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:39:42,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:39:42,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:39:42,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:39:42,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:39:42,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:39:42,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:39:42,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:39:42,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:39:42,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:39:42,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:39:42,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:39:42,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:39:42,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:39:42,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:39:42,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:39:42,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:39:42,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:39:42,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:39:42,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:39:42,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:39:42,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:39:42,402 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:39:42,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:39:42,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:39:42,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:39:42,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:39:42,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:39:42,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:39:42,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:39:42,405 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:39:42,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:39:42,406 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:39:42,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:39:42,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:39:42,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:39:42,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:39:42,407 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:39:42,407 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:39:42,407 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:39:42,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:39:42,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:39:42,407 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:39:42,407 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:39:42,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:39:42,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:39:42,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:39:42,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:39:42,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:39:42,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:39:42,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:39:42,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:39:42,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:39:42,409 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:39:42,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:39:42,409 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:39:42,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:39:42,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:39:42,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:39:42,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:39:42,623 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:39:42,623 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:39:42,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2023-08-31 23:39:43,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:39:43,817 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:39:43,818 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2023-08-31 23:39:43,828 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f0920d3/fc05010930714e1fa58b1bfc143869b0/FLAG242ea806b [2023-08-31 23:39:43,840 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f0920d3/fc05010930714e1fa58b1bfc143869b0 [2023-08-31 23:39:43,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:39:43,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:39:43,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:39:43,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:39:43,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:39:43,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:39:43" (1/1) ... [2023-08-31 23:39:43,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17025145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:43, skipping insertion in model container [2023-08-31 23:39:43,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:39:43" (1/1) ... [2023-08-31 23:39:43,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:39:43,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:39:43,976 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-wmm/safe019_rmo.opt.i[992,1005] [2023-08-31 23:39:44,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:39:44,162 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:39:44,172 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-wmm/safe019_rmo.opt.i[992,1005] [2023-08-31 23:39:44,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:39:44,249 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:39:44,249 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:39:44,268 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:39:44,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44 WrapperNode [2023-08-31 23:39:44,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:39:44,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:39:44,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:39:44,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:39:44,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,323 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 152 [2023-08-31 23:39:44,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:39:44,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:39:44,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:39:44,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:39:44,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,368 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:39:44,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:39:44,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:39:44,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:39:44,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (1/1) ... [2023-08-31 23:39:44,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:39:44,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:39:44,401 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) [2023-08-31 23:39:44,403 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 [2023-08-31 23:39:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 23:39:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:39:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:39:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:39:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:39:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:39:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:39:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:39:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:39:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:39:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:39:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:39:44,424 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-31 23:39:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-31 23:39:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:39:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:39:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:39:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:39:44,426 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:39:44,551 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:39:44,553 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:39:44,925 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:39:45,203 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:39:45,203 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:39:45,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:39:45 BoogieIcfgContainer [2023-08-31 23:39:45,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:39:45,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:39:45,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:39:45,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:39:45,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:39:43" (1/3) ... [2023-08-31 23:39:45,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328c974c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:39:45, skipping insertion in model container [2023-08-31 23:39:45,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:44" (2/3) ... [2023-08-31 23:39:45,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328c974c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:39:45, skipping insertion in model container [2023-08-31 23:39:45,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:39:45" (3/3) ... [2023-08-31 23:39:45,211 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2023-08-31 23:39:45,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:39:45,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-08-31 23:39:45,223 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:39:45,338 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:39:45,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 200 transitions, 420 flow [2023-08-31 23:39:45,425 INFO L130 PetriNetUnfolder]: 2/196 cut-off events. [2023-08-31 23:39:45,425 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:39:45,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 196 events. 2/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 297 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-08-31 23:39:45,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 200 transitions, 420 flow [2023-08-31 23:39:45,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 404 flow [2023-08-31 23:39:45,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:39:45,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 404 flow [2023-08-31 23:39:45,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 404 flow [2023-08-31 23:39:45,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 404 flow [2023-08-31 23:39:45,474 INFO L130 PetriNetUnfolder]: 2/196 cut-off events. [2023-08-31 23:39:45,474 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:39:45,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 196 events. 2/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 298 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-08-31 23:39:45,478 INFO L119 LiptonReduction]: Number of co-enabled transitions 9730 [2023-08-31 23:39:52,005 INFO L134 LiptonReduction]: Checked pairs total: 59530 [2023-08-31 23:39:52,006 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-31 23:39:52,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:39:52,018 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;@74f5a56a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:39:52,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2023-08-31 23:39:52,020 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:39:52,020 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:39:52,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:39:52,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:39:52,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:39:52,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:39:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1136, now seen corresponding path program 1 times [2023-08-31 23:39:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:39:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274180127] [2023-08-31 23:39:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:39:52,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:39:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:39:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:39:52,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:39:52,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274180127] [2023-08-31 23:39:52,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274180127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:39:52,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:39:52,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:39:52,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299156326] [2023-08-31 23:39:52,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:39:52,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:39:52,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:39:52,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:39:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:39:52,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 356 [2023-08-31 23:39:52,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:52,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:39:52,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 356 [2023-08-31 23:39:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:21,308 INFO L130 PetriNetUnfolder]: 269708/353427 cut-off events. [2023-08-31 23:40:21,308 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-31 23:40:21,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703274 conditions, 353427 events. 269708/353427 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 20173. Compared 2505945 event pairs, 269708 based on Foata normal form. 4800/155873 useless extension candidates. Maximal degree in co-relation 703262. Up to 348508 conditions per place. [2023-08-31 23:40:23,116 INFO L137 encePairwiseOnDemand]: 327/356 looper letters, 56 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-08-31 23:40:23,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 240 flow [2023-08-31 23:40:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:40:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:40:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 373 transitions. [2023-08-31 23:40:23,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523876404494382 [2023-08-31 23:40:23,125 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 373 transitions. [2023-08-31 23:40:23,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 373 transitions. [2023-08-31 23:40:23,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:23,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 373 transitions. [2023-08-31 23:40:23,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:23,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:23,133 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:23,134 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 2 states and 373 transitions. [2023-08-31 23:40:23,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 240 flow [2023-08-31 23:40:23,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:40:23,206 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 124 flow [2023-08-31 23:40:23,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2023-08-31 23:40:23,210 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -31 predicate places. [2023-08-31 23:40:23,210 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 124 flow [2023-08-31 23:40:23,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:23,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:23,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:40:23,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:40:23,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:40:23,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash 34843054, now seen corresponding path program 1 times [2023-08-31 23:40:23,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:23,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078604297] [2023-08-31 23:40:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:23,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:23,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:23,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078604297] [2023-08-31 23:40:23,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078604297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:23,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:23,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:23,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269130069] [2023-08-31 23:40:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:23,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 356 [2023-08-31 23:40:23,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:23,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:23,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 356 [2023-08-31 23:40:23,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:41,800 INFO L130 PetriNetUnfolder]: 179595/242021 cut-off events. [2023-08-31 23:40:41,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:40:42,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482747 conditions, 242021 events. 179595/242021 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12099. Compared 1759040 event pairs, 105445 based on Foata normal form. 0/132630 useless extension candidates. Maximal degree in co-relation 482744. Up to 135081 conditions per place. [2023-08-31 23:40:42,955 INFO L137 encePairwiseOnDemand]: 333/356 looper letters, 68 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-08-31 23:40:42,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 330 flow [2023-08-31 23:40:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-31 23:40:42,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700374531835206 [2023-08-31 23:40:42,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-31 23:40:42,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-31 23:40:42,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:42,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-31 23:40:42,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:42,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:42,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:42,962 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 124 flow. Second operand 3 states and 502 transitions. [2023-08-31 23:40:42,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 330 flow [2023-08-31 23:40:42,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:40:42,965 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 226 flow [2023-08-31 23:40:42,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-08-31 23:40:42,965 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -29 predicate places. [2023-08-31 23:40:42,965 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 226 flow [2023-08-31 23:40:42,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:42,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:42,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:40:42,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:40:42,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:40:42,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash 34843055, now seen corresponding path program 1 times [2023-08-31 23:40:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:42,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120387029] [2023-08-31 23:40:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:42,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:43,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:43,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120387029] [2023-08-31 23:40:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120387029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:43,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:43,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995668440] [2023-08-31 23:40:43,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:43,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 356 [2023-08-31 23:40:43,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:43,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:43,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 356 [2023-08-31 23:40:43,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:48,102 INFO L130 PetriNetUnfolder]: 40307/57064 cut-off events. [2023-08-31 23:40:48,103 INFO L131 PetriNetUnfolder]: For 17040/17040 co-relation queries the response was YES. [2023-08-31 23:40:48,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160144 conditions, 57064 events. 40307/57064 cut-off events. For 17040/17040 co-relation queries the response was YES. Maximal size of possible extension queue 3213. Compared 391772 event pairs, 29869 based on Foata normal form. 15637/65588 useless extension candidates. Maximal degree in co-relation 160139. Up to 54129 conditions per place. [2023-08-31 23:40:48,374 INFO L137 encePairwiseOnDemand]: 344/356 looper letters, 50 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2023-08-31 23:40:48,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 308 flow [2023-08-31 23:40:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-31 23:40:48,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449438202247191 [2023-08-31 23:40:48,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-31 23:40:48,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-31 23:40:48,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:48,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-31 23:40:48,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:48,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:48,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:48,380 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 226 flow. Second operand 3 states and 480 transitions. [2023-08-31 23:40:48,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 308 flow [2023-08-31 23:40:48,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:40:48,500 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2023-08-31 23:40:48,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-31 23:40:48,500 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -40 predicate places. [2023-08-31 23:40:48,501 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2023-08-31 23:40:48,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:48,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:48,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:40:48,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:40:48,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:40:48,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:48,502 INFO L85 PathProgramCache]: Analyzing trace with hash -861138886, now seen corresponding path program 1 times [2023-08-31 23:40:48,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:48,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944436411] [2023-08-31 23:40:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:48,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:48,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944436411] [2023-08-31 23:40:48,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944436411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:48,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:48,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:48,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103143383] [2023-08-31 23:40:48,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:48,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:48,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:48,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 356 [2023-08-31 23:40:48,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:48,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:48,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 356 [2023-08-31 23:40:48,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:53,023 INFO L130 PetriNetUnfolder]: 39158/56233 cut-off events. [2023-08-31 23:40:53,023 INFO L131 PetriNetUnfolder]: For 6169/6169 co-relation queries the response was YES. [2023-08-31 23:40:53,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145406 conditions, 56233 events. 39158/56233 cut-off events. For 6169/6169 co-relation queries the response was YES. Maximal size of possible extension queue 3267. Compared 399773 event pairs, 14048 based on Foata normal form. 0/42625 useless extension candidates. Maximal degree in co-relation 145401. Up to 40377 conditions per place. [2023-08-31 23:40:53,435 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 81 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-31 23:40:53,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 458 flow [2023-08-31 23:40:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-31 23:40:53,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46722846441947563 [2023-08-31 23:40:53,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-31 23:40:53,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-31 23:40:53,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:53,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-31 23:40:53,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:53,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:53,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:53,443 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 3 states and 499 transitions. [2023-08-31 23:40:53,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 458 flow [2023-08-31 23:40:53,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:40:53,446 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 192 flow [2023-08-31 23:40:53,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-31 23:40:53,447 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -39 predicate places. [2023-08-31 23:40:53,447 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 192 flow [2023-08-31 23:40:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:53,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:40:53,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:40:53,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:40:53,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -861138478, now seen corresponding path program 1 times [2023-08-31 23:40:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552787932] [2023-08-31 23:40:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:53,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:53,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552787932] [2023-08-31 23:40:53,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552787932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:53,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:53,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:53,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755299841] [2023-08-31 23:40:53,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:53,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:53,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:53,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:53,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:53,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 356 [2023-08-31 23:40:53,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:53,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:53,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 356 [2023-08-31 23:40:53,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:58,737 INFO L130 PetriNetUnfolder]: 45895/64052 cut-off events. [2023-08-31 23:40:58,737 INFO L131 PetriNetUnfolder]: For 11853/11965 co-relation queries the response was YES. [2023-08-31 23:40:58,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171672 conditions, 64052 events. 45895/64052 cut-off events. For 11853/11965 co-relation queries the response was YES. Maximal size of possible extension queue 2895. Compared 423431 event pairs, 11315 based on Foata normal form. 64/50104 useless extension candidates. Maximal degree in co-relation 171666. Up to 58680 conditions per place. [2023-08-31 23:40:59,061 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 82 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-31 23:40:59,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 480 flow [2023-08-31 23:40:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:59,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-31 23:40:59,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616104868913858 [2023-08-31 23:40:59,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-31 23:40:59,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-31 23:40:59,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:59,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-31 23:40:59,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,065 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 192 flow. Second operand 3 states and 493 transitions. [2023-08-31 23:40:59,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 480 flow [2023-08-31 23:40:59,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:40:59,076 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 205 flow [2023-08-31 23:40:59,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-31 23:40:59,077 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -38 predicate places. [2023-08-31 23:40:59,077 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 205 flow [2023-08-31 23:40:59,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:59,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:40:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:40:59,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:40:59,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash -420712658, now seen corresponding path program 1 times [2023-08-31 23:40:59,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:59,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347618601] [2023-08-31 23:40:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:59,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:59,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347618601] [2023-08-31 23:40:59,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347618601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:59,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:59,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:40:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600447193] [2023-08-31 23:40:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:59,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:40:59,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:59,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:40:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:40:59,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 356 [2023-08-31 23:40:59,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:59,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 356 [2023-08-31 23:40:59,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:05,233 INFO L130 PetriNetUnfolder]: 50018/71397 cut-off events. [2023-08-31 23:41:05,233 INFO L131 PetriNetUnfolder]: For 12771/12771 co-relation queries the response was YES. [2023-08-31 23:41:05,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196351 conditions, 71397 events. 50018/71397 cut-off events. For 12771/12771 co-relation queries the response was YES. Maximal size of possible extension queue 3580. Compared 500814 event pairs, 23869 based on Foata normal form. 0/56598 useless extension candidates. Maximal degree in co-relation 196344. Up to 54618 conditions per place. [2023-08-31 23:41:05,596 INFO L137 encePairwiseOnDemand]: 348/356 looper letters, 69 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2023-08-31 23:41:05,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 432 flow [2023-08-31 23:41:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:41:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:41:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2023-08-31 23:41:05,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425561797752809 [2023-08-31 23:41:05,598 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2023-08-31 23:41:05,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2023-08-31 23:41:05,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:05,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2023-08-31 23:41:05,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:05,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:05,602 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:05,602 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 205 flow. Second operand 4 states and 606 transitions. [2023-08-31 23:41:05,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 432 flow [2023-08-31 23:41:05,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:41:05,605 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 251 flow [2023-08-31 23:41:05,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-31 23:41:05,605 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -36 predicate places. [2023-08-31 23:41:05,606 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 251 flow [2023-08-31 23:41:05,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:05,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:05,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:05,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:41:05,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:41:05,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:05,607 INFO L85 PathProgramCache]: Analyzing trace with hash -925490617, now seen corresponding path program 1 times [2023-08-31 23:41:05,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:05,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844922303] [2023-08-31 23:41:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:05,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844922303] [2023-08-31 23:41:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844922303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:05,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:05,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:41:05,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656209172] [2023-08-31 23:41:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:05,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:41:05,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:41:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:41:05,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 356 [2023-08-31 23:41:05,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:05,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:05,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 356 [2023-08-31 23:41:05,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:11,730 INFO L130 PetriNetUnfolder]: 47899/69038 cut-off events. [2023-08-31 23:41:11,730 INFO L131 PetriNetUnfolder]: For 26545/26545 co-relation queries the response was YES. [2023-08-31 23:41:11,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198137 conditions, 69038 events. 47899/69038 cut-off events. For 26545/26545 co-relation queries the response was YES. Maximal size of possible extension queue 3552. Compared 493520 event pairs, 18580 based on Foata normal form. 240/55529 useless extension candidates. Maximal degree in co-relation 198129. Up to 52735 conditions per place. [2023-08-31 23:41:12,094 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 83 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-31 23:41:12,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 535 flow [2023-08-31 23:41:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:41:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:41:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 635 transitions. [2023-08-31 23:41:12,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44592696629213485 [2023-08-31 23:41:12,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 635 transitions. [2023-08-31 23:41:12,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 635 transitions. [2023-08-31 23:41:12,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:12,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 635 transitions. [2023-08-31 23:41:12,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:12,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:12,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:12,099 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 251 flow. Second operand 4 states and 635 transitions. [2023-08-31 23:41:12,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 535 flow [2023-08-31 23:41:12,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:41:12,204 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 241 flow [2023-08-31 23:41:12,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-08-31 23:41:12,205 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -37 predicate places. [2023-08-31 23:41:12,205 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 241 flow [2023-08-31 23:41:12,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:12,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:12,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:12,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:41:12,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:41:12,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:12,206 INFO L85 PathProgramCache]: Analyzing trace with hash -928321099, now seen corresponding path program 1 times [2023-08-31 23:41:12,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:12,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030603600] [2023-08-31 23:41:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:12,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:12,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:12,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030603600] [2023-08-31 23:41:12,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030603600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:12,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:12,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:41:12,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712935170] [2023-08-31 23:41:12,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:12,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:41:12,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:41:12,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:41:12,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 356 [2023-08-31 23:41:12,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:12,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:12,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 356 [2023-08-31 23:41:12,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:18,262 INFO L130 PetriNetUnfolder]: 47734/68600 cut-off events. [2023-08-31 23:41:18,262 INFO L131 PetriNetUnfolder]: For 27577/27819 co-relation queries the response was YES. [2023-08-31 23:41:18,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194572 conditions, 68600 events. 47734/68600 cut-off events. For 27577/27819 co-relation queries the response was YES. Maximal size of possible extension queue 3556. Compared 492765 event pairs, 19499 based on Foata normal form. 44/54719 useless extension candidates. Maximal degree in co-relation 194565. Up to 63139 conditions per place. [2023-08-31 23:41:18,627 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 87 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-31 23:41:18,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 563 flow [2023-08-31 23:41:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:41:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:41:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-31 23:41:18,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681647940074906 [2023-08-31 23:41:18,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-31 23:41:18,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-31 23:41:18,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:18,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-31 23:41:18,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:18,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:18,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:18,632 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 241 flow. Second operand 3 states and 500 transitions. [2023-08-31 23:41:18,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 563 flow [2023-08-31 23:41:18,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:41:18,744 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 273 flow [2023-08-31 23:41:18,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-08-31 23:41:18,745 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -36 predicate places. [2023-08-31 23:41:18,745 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 273 flow [2023-08-31 23:41:18,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:18,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:18,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:41:18,746 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:41:18,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1286816021, now seen corresponding path program 1 times [2023-08-31 23:41:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:18,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177289444] [2023-08-31 23:41:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:18,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:18,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177289444] [2023-08-31 23:41:18,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177289444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:18,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:18,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:41:18,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484425534] [2023-08-31 23:41:18,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:18,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:41:18,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:41:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:41:18,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 356 [2023-08-31 23:41:18,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:18,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:18,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 356 [2023-08-31 23:41:18,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:24,867 INFO L130 PetriNetUnfolder]: 47747/68838 cut-off events. [2023-08-31 23:41:24,867 INFO L131 PetriNetUnfolder]: For 29944/29944 co-relation queries the response was YES. [2023-08-31 23:41:25,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202262 conditions, 68838 events. 47747/68838 cut-off events. For 29944/29944 co-relation queries the response was YES. Maximal size of possible extension queue 3552. Compared 492064 event pairs, 18476 based on Foata normal form. 36/55125 useless extension candidates. Maximal degree in co-relation 202254. Up to 52688 conditions per place. [2023-08-31 23:41:25,262 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 82 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-31 23:41:25,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 557 flow [2023-08-31 23:41:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:41:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:41:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-31 23:41:25,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46629213483146065 [2023-08-31 23:41:25,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-31 23:41:25,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-31 23:41:25,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:25,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-31 23:41:25,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:25,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:25,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:25,266 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 273 flow. Second operand 3 states and 498 transitions. [2023-08-31 23:41:25,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 557 flow [2023-08-31 23:41:25,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:41:25,363 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 286 flow [2023-08-31 23:41:25,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-31 23:41:25,363 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -34 predicate places. [2023-08-31 23:41:25,364 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 286 flow [2023-08-31 23:41:25,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:25,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:25,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:25,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:41:25,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-31 23:41:25,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:25,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1374570387, now seen corresponding path program 1 times [2023-08-31 23:41:25,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:25,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785359506] [2023-08-31 23:41:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:25,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:25,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:25,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785359506] [2023-08-31 23:41:25,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785359506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:25,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:25,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:41:25,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630343532] [2023-08-31 23:41:25,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:41:25,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:41:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:41:25,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 356 [2023-08-31 23:41:25,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:25,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:25,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 356 [2023-08-31 23:41:25,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:34,697 INFO L130 PetriNetUnfolder]: 75544/107318 cut-off events. [2023-08-31 23:41:34,698 INFO L131 PetriNetUnfolder]: For 53286/53382 co-relation queries the response was YES. [2023-08-31 23:41:34,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316030 conditions, 107318 events. 75544/107318 cut-off events. For 53286/53382 co-relation queries the response was YES. Maximal size of possible extension queue 5434. Compared 789818 event pairs, 26437 based on Foata normal form. 288/85211 useless extension candidates. Maximal degree in co-relation 316021. Up to 58268 conditions per place.