./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:46:48,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:46:48,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:46:48,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:46:48,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:46:48,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:46:48,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:46:48,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:46:48,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:46:48,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:46:48,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:46:48,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:46:48,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:46:48,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:46:48,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:46:48,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:46:48,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:46:48,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:46:48,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:46:48,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:46:48,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:46:48,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:46:48,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:46:48,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:46:48,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:46:48,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:46:48,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:46:48,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:46:48,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:46:48,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:46:48,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:46:48,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:46:48,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:46:48,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:46:48,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:46:48,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:46:48,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:46:48,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:46:48,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:46:48,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:46:48,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:46:48,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:46:48,715 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:46:48,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:46:48,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:46:48,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:46:48,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:46:48,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:46:48,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:46:48,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:46:48,717 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:46:48,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:46:48,718 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:46:48,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:46:48,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:46:48,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:46:48,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:46:48,719 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:46:48,719 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:46:48,719 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:46:48,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:46:48,719 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:46:48,720 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:46:48,720 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:46:48,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:46:48,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:46:48,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:46:48,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:46:48,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:46:48,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:46:48,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:46:48,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:46:48,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:46:48,721 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:46:48,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:46:48,722 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:46:48,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:46:48,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:46:48,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:46:48,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:46:48,940 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:46:48,940 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:46:48,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-29 19:46:49,824 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:46:50,024 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:46:50,024 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-29 19:46:50,039 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd92fe186/55655a61abfe4b749b0dc3a7578a95cd/FLAG3718b08bf [2023-08-29 19:46:50,053 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd92fe186/55655a61abfe4b749b0dc3a7578a95cd [2023-08-29 19:46:50,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:46:50,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:46:50,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:46:50,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:46:50,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:46:50,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d80d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50, skipping insertion in model container [2023-08-29 19:46:50,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:46:50,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:46:50,221 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 19:46:50,309 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[31246,31259] [2023-08-29 19:46:50,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:46:50,331 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:46:50,349 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 19:46:50,371 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i[31246,31259] [2023-08-29 19:46:50,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:46:50,403 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:50,404 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:50,404 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:50,408 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:46:50,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50 WrapperNode [2023-08-29 19:46:50,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:46:50,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:46:50,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:46:50,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:46:50,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,458 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2023-08-29 19:46:50,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:46:50,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:46:50,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:46:50,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:46:50,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,491 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:46:50,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:46:50,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:46:50,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:46:50,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (1/1) ... [2023-08-29 19:46:50,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:46:50,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:50,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:46:50,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:46:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 19:46:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:46:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:46:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:46:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-08-29 19:46:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-08-29 19:46:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:46:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:46:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:46:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:46:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:46:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:46:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-08-29 19:46:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-08-29 19:46:50,558 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:46:50,706 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:46:50,707 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:46:50,913 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:46:50,939 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:46:50,943 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 19:46:50,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:50 BoogieIcfgContainer [2023-08-29 19:46:50,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:46:50,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:46:50,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:46:50,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:46:50,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:46:50" (1/3) ... [2023-08-29 19:46:50,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512854bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:46:50, skipping insertion in model container [2023-08-29 19:46:50,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:50" (2/3) ... [2023-08-29 19:46:50,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512854bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:46:50, skipping insertion in model container [2023-08-29 19:46:50,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:50" (3/3) ... [2023-08-29 19:46:50,951 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-08-29 19:46:50,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:46:50,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-29 19:46:50,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:46:51,035 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 19:46:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 288 flow [2023-08-29 19:46:51,117 INFO L130 PetriNetUnfolder]: 2/124 cut-off events. [2023-08-29 19:46:51,117 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 19:46:51,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 2/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-29 19:46:51,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 128 transitions, 288 flow [2023-08-29 19:46:51,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 120 transitions, 264 flow [2023-08-29 19:46:51,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:46:51,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 120 transitions, 264 flow [2023-08-29 19:46:51,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 120 transitions, 264 flow [2023-08-29 19:46:51,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 120 transitions, 264 flow [2023-08-29 19:46:51,183 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2023-08-29 19:46:51,183 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 19:46:51,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 120 events. 2/120 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-29 19:46:51,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 3048 [2023-08-29 19:46:54,251 INFO L134 LiptonReduction]: Checked pairs total: 10807 [2023-08-29 19:46:54,251 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-29 19:46:54,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:46:54,264 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;@39fd16cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:46:54,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-29 19:46:54,266 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:46:54,266 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:46:54,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:54,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:46:54,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:54,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:54,270 INFO L85 PathProgramCache]: Analyzing trace with hash 437, now seen corresponding path program 1 times [2023-08-29 19:46:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:54,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660847202] [2023-08-29 19:46:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:54,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:54,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660847202] [2023-08-29 19:46:54,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660847202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:54,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:54,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:46:54,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236035131] [2023-08-29 19:46:54,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:54,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:46:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:46:54,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:46:54,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 229 [2023-08-29 19:46:54,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:54,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:54,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 229 [2023-08-29 19:46:54,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:54,995 INFO L130 PetriNetUnfolder]: 5285/7977 cut-off events. [2023-08-29 19:46:54,996 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2023-08-29 19:46:55,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15680 conditions, 7977 events. 5285/7977 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 54392 event pairs, 5285 based on Foata normal form. 640/6095 useless extension candidates. Maximal degree in co-relation 12203. Up to 7413 conditions per place. [2023-08-29 19:46:55,031 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 45 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-29 19:46:55,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 220 flow [2023-08-29 19:46:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:46:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:46:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 273 transitions. [2023-08-29 19:46:55,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960698689956332 [2023-08-29 19:46:55,044 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 273 transitions. [2023-08-29 19:46:55,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 273 transitions. [2023-08-29 19:46:55,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:55,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 273 transitions. [2023-08-29 19:46:55,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,054 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,055 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 138 flow. Second operand 2 states and 273 transitions. [2023-08-29 19:46:55,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 220 flow [2023-08-29 19:46:55,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 204 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-29 19:46:55,062 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 114 flow [2023-08-29 19:46:55,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-08-29 19:46:55,066 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-29 19:46:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 114 flow [2023-08-29 19:46:55,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:55,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:46:55,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:46:55,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:55,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash 431598, now seen corresponding path program 1 times [2023-08-29 19:46:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705925651] [2023-08-29 19:46:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:55,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:55,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:55,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705925651] [2023-08-29 19:46:55,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705925651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:55,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:55,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:55,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386538151] [2023-08-29 19:46:55,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:55,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:55,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 229 [2023-08-29 19:46:55,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:55,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 229 [2023-08-29 19:46:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:55,813 INFO L130 PetriNetUnfolder]: 5031/7612 cut-off events. [2023-08-29 19:46:55,813 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-29 19:46:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14738 conditions, 7612 events. 5031/7612 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 51601 event pairs, 5031 based on Foata normal form. 0/5292 useless extension candidates. Maximal degree in co-relation 14735. Up to 7046 conditions per place. [2023-08-29 19:46:55,845 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-29 19:46:55,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 196 flow [2023-08-29 19:46:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:55,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-08-29 19:46:55,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065502183406113 [2023-08-29 19:46:55,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-08-29 19:46:55,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-08-29 19:46:55,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:55,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-08-29 19:46:55,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,852 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 114 flow. Second operand 3 states and 348 transitions. [2023-08-29 19:46:55,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 196 flow [2023-08-29 19:46:55,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:46:55,854 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 114 flow [2023-08-29 19:46:55,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-08-29 19:46:55,854 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-29 19:46:55,854 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 114 flow [2023-08-29 19:46:55,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:55,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:46:55,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:46:55,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:55,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash 431596, now seen corresponding path program 1 times [2023-08-29 19:46:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:55,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838112764] [2023-08-29 19:46:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838112764] [2023-08-29 19:46:55,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838112764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:55,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:55,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913036666] [2023-08-29 19:46:55,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:55,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:55,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:56,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-29 19:46:56,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:56,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-29 19:46:56,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:56,418 INFO L130 PetriNetUnfolder]: 4777/7247 cut-off events. [2023-08-29 19:46:56,418 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-29 19:46:56,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14011 conditions, 7247 events. 4777/7247 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 48713 event pairs, 4777 based on Foata normal form. 0/5129 useless extension candidates. Maximal degree in co-relation 14007. Up to 6681 conditions per place. [2023-08-29 19:46:56,442 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 39 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-29 19:46:56,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 192 flow [2023-08-29 19:46:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-08-29 19:46:56,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529839883551674 [2023-08-29 19:46:56,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-08-29 19:46:56,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-08-29 19:46:56,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:56,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-08-29 19:46:56,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,446 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 114 flow. Second operand 3 states and 364 transitions. [2023-08-29 19:46:56,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 192 flow [2023-08-29 19:46:56,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:56,448 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 110 flow [2023-08-29 19:46:56,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-29 19:46:56,448 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2023-08-29 19:46:56,448 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 110 flow [2023-08-29 19:46:56,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:56,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:46:56,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:46:56,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:56,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash 414774320, now seen corresponding path program 1 times [2023-08-29 19:46:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458048204] [2023-08-29 19:46:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:56,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:56,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458048204] [2023-08-29 19:46:56,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458048204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:56,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:56,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80724994] [2023-08-29 19:46:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:56,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:56,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-29 19:46:56,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:56,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-29 19:46:56,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:56,943 INFO L130 PetriNetUnfolder]: 4723/7157 cut-off events. [2023-08-29 19:46:56,943 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-29 19:46:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 7157 events. 4723/7157 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 48160 event pairs, 4723 based on Foata normal form. 0/5090 useless extension candidates. Maximal degree in co-relation 13827. Up to 6591 conditions per place. [2023-08-29 19:46:56,977 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 37 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-29 19:46:56,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 184 flow [2023-08-29 19:46:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-29 19:46:56,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269286754002911 [2023-08-29 19:46:56,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-29 19:46:56,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-29 19:46:56,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:56,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-29 19:46:56,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,985 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 110 flow. Second operand 3 states and 362 transitions. [2023-08-29 19:46:56,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 184 flow [2023-08-29 19:46:56,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:56,986 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 106 flow [2023-08-29 19:46:56,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-29 19:46:56,988 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-29 19:46:56,988 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 106 flow [2023-08-29 19:46:56,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:56,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 19:46:56,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:46:56,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:56,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:56,989 INFO L85 PathProgramCache]: Analyzing trace with hash 414774319, now seen corresponding path program 1 times [2023-08-29 19:46:56,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183651590] [2023-08-29 19:46:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:56,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:57,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183651590] [2023-08-29 19:46:57,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183651590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:57,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:57,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:57,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967580015] [2023-08-29 19:46:57,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:57,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:57,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:57,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 229 [2023-08-29 19:46:57,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:57,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 229 [2023-08-29 19:46:57,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:57,400 INFO L130 PetriNetUnfolder]: 4669/7067 cut-off events. [2023-08-29 19:46:57,400 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-29 19:46:57,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13651 conditions, 7067 events. 4669/7067 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 47485 event pairs, 4669 based on Foata normal form. 0/5051 useless extension candidates. Maximal degree in co-relation 13647. Up to 6501 conditions per place. [2023-08-29 19:46:57,425 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 35 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-29 19:46:57,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 176 flow [2023-08-29 19:46:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-29 19:46:57,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978165938864629 [2023-08-29 19:46:57,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-29 19:46:57,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-29 19:46:57,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:57,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-29 19:46:57,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,429 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 106 flow. Second operand 3 states and 342 transitions. [2023-08-29 19:46:57,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 176 flow [2023-08-29 19:46:57,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:57,430 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 102 flow [2023-08-29 19:46:57,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-29 19:46:57,431 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2023-08-29 19:46:57,431 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 102 flow [2023-08-29 19:46:57,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:57,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:57,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:46:57,432 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:57,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash -833829137, now seen corresponding path program 1 times [2023-08-29 19:46:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:57,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853725031] [2023-08-29 19:46:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:57,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853725031] [2023-08-29 19:46:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853725031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:57,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:57,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:57,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647789796] [2023-08-29 19:46:57,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:57,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 229 [2023-08-29 19:46:57,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:57,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 229 [2023-08-29 19:46:57,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:57,765 INFO L130 PetriNetUnfolder]: 4547/6885 cut-off events. [2023-08-29 19:46:57,765 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-29 19:46:57,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13287 conditions, 6885 events. 4547/6885 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 46127 event pairs, 4547 based on Foata normal form. 0/4967 useless extension candidates. Maximal degree in co-relation 13283. Up to 6319 conditions per place. [2023-08-29 19:46:57,784 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 33 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-29 19:46:57,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 168 flow [2023-08-29 19:46:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-08-29 19:46:57,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4949053857350801 [2023-08-29 19:46:57,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-08-29 19:46:57,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-08-29 19:46:57,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:57,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-08-29 19:46:57,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,788 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 102 flow. Second operand 3 states and 340 transitions. [2023-08-29 19:46:57,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 168 flow [2023-08-29 19:46:57,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:57,790 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 98 flow [2023-08-29 19:46:57,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-29 19:46:57,792 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2023-08-29 19:46:57,792 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 98 flow [2023-08-29 19:46:57,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:57,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:46:57,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:57,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash -833829138, now seen corresponding path program 1 times [2023-08-29 19:46:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006570443] [2023-08-29 19:46:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:57,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:57,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006570443] [2023-08-29 19:46:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006570443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:57,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:57,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:57,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896981345] [2023-08-29 19:46:57,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:57,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:57,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:57,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-29 19:46:57,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:57,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:57,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-29 19:46:57,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:58,109 INFO L130 PetriNetUnfolder]: 4425/6703 cut-off events. [2023-08-29 19:46:58,109 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-29 19:46:58,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12923 conditions, 6703 events. 4425/6703 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 44918 event pairs, 4425 based on Foata normal form. 0/4883 useless extension candidates. Maximal degree in co-relation 12919. Up to 6137 conditions per place. [2023-08-29 19:46:58,133 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-29 19:46:58,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 160 flow [2023-08-29 19:46:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-29 19:46:58,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181950509461426 [2023-08-29 19:46:58,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-29 19:46:58,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-29 19:46:58,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:58,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-29 19:46:58,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:58,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:58,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:58,137 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 98 flow. Second operand 3 states and 356 transitions. [2023-08-29 19:46:58,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 160 flow [2023-08-29 19:46:58,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:58,138 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 94 flow [2023-08-29 19:46:58,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-29 19:46:58,139 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2023-08-29 19:46:58,139 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 94 flow [2023-08-29 19:46:58,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:58,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:58,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:58,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:46:58,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:58,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1816247104, now seen corresponding path program 1 times [2023-08-29 19:46:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419635442] [2023-08-29 19:46:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:58,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:58,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419635442] [2023-08-29 19:46:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419635442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:58,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:46:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36285075] [2023-08-29 19:46:58,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:58,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:46:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:46:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:46:58,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-29 19:46:58,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:58,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:58,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-29 19:46:58,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:59,758 INFO L130 PetriNetUnfolder]: 28373/39568 cut-off events. [2023-08-29 19:46:59,758 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2023-08-29 19:46:59,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78606 conditions, 39568 events. 28373/39568 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 250767 event pairs, 4391 based on Foata normal form. 0/30696 useless extension candidates. Maximal degree in co-relation 78602. Up to 17007 conditions per place. [2023-08-29 19:46:59,962 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 163 selfloop transitions, 22 changer transitions 0/187 dead transitions. [2023-08-29 19:46:59,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 187 transitions, 787 flow [2023-08-29 19:46:59,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:46:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:46:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1013 transitions. [2023-08-29 19:46:59,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529475982532751 [2023-08-29 19:46:59,965 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1013 transitions. [2023-08-29 19:46:59,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1013 transitions. [2023-08-29 19:46:59,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:59,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1013 transitions. [2023-08-29 19:46:59,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:59,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:59,969 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:59,969 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 94 flow. Second operand 8 states and 1013 transitions. [2023-08-29 19:46:59,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 187 transitions, 787 flow [2023-08-29 19:46:59,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 187 transitions, 777 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:59,972 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 241 flow [2023-08-29 19:46:59,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-29 19:46:59,973 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-29 19:46:59,974 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 241 flow [2023-08-29 19:46:59,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:59,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:59,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:59,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:46:59,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:46:59,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1849091405, now seen corresponding path program 1 times [2023-08-29 19:46:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:59,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146946494] [2023-08-29 19:46:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:00,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:00,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146946494] [2023-08-29 19:47:00,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146946494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:00,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:00,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:00,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491194767] [2023-08-29 19:47:00,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:00,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:47:00,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:00,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:47:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:47:00,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 229 [2023-08-29 19:47:00,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:00,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:00,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 229 [2023-08-29 19:47:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:01,007 INFO L130 PetriNetUnfolder]: 12754/19358 cut-off events. [2023-08-29 19:47:01,007 INFO L131 PetriNetUnfolder]: For 7964/9859 co-relation queries the response was YES. [2023-08-29 19:47:01,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44851 conditions, 19358 events. 12754/19358 cut-off events. For 7964/9859 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 142012 event pairs, 11712 based on Foata normal form. 460/14945 useless extension candidates. Maximal degree in co-relation 44842. Up to 17795 conditions per place. [2023-08-29 19:47:01,086 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 32 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-29 19:47:01,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 307 flow [2023-08-29 19:47:01,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:47:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:47:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-29 19:47:01,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366812227074236 [2023-08-29 19:47:01,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-29 19:47:01,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-29 19:47:01,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:01,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-29 19:47:01,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,090 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 241 flow. Second operand 3 states and 300 transitions. [2023-08-29 19:47:01,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 307 flow [2023-08-29 19:47:01,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:47:01,132 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 243 flow [2023-08-29 19:47:01,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-29 19:47:01,132 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-29 19:47:01,133 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 243 flow [2023-08-29 19:47:01,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:01,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:01,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:47:01,133 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:01,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1849091407, now seen corresponding path program 1 times [2023-08-29 19:47:01,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:01,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309815487] [2023-08-29 19:47:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:01,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:01,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:01,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309815487] [2023-08-29 19:47:01,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309815487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:01,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:01,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:47:01,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637754324] [2023-08-29 19:47:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:01,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:47:01,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:47:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:47:01,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-29 19:47:01,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:01,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-29 19:47:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:01,992 INFO L130 PetriNetUnfolder]: 8966/13834 cut-off events. [2023-08-29 19:47:01,993 INFO L131 PetriNetUnfolder]: For 5863/7245 co-relation queries the response was YES. [2023-08-29 19:47:02,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32207 conditions, 13834 events. 8966/13834 cut-off events. For 5863/7245 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 99326 event pairs, 8197 based on Foata normal form. 341/11529 useless extension candidates. Maximal degree in co-relation 32197. Up to 12764 conditions per place. [2023-08-29 19:47:02,045 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-29 19:47:02,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 307 flow [2023-08-29 19:47:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:47:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:47:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-08-29 19:47:02,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138282387190685 [2023-08-29 19:47:02,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-08-29 19:47:02,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-08-29 19:47:02,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:02,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-08-29 19:47:02,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,049 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 243 flow. Second operand 3 states and 353 transitions. [2023-08-29 19:47:02,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 307 flow [2023-08-29 19:47:02,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:47:02,063 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 241 flow [2023-08-29 19:47:02,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-08-29 19:47:02,063 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-29 19:47:02,063 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 241 flow [2023-08-29 19:47:02,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:02,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:02,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:47:02,064 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:02,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash -561888545, now seen corresponding path program 1 times [2023-08-29 19:47:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:02,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400728787] [2023-08-29 19:47:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:02,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400728787] [2023-08-29 19:47:02,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400728787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:02,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:47:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680082465] [2023-08-29 19:47:02,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:02,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:47:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:02,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:47:02,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:47:02,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 229 [2023-08-29 19:47:02,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:02,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 229 [2023-08-29 19:47:02,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:02,570 INFO L130 PetriNetUnfolder]: 6791/10945 cut-off events. [2023-08-29 19:47:02,570 INFO L131 PetriNetUnfolder]: For 4763/5283 co-relation queries the response was YES. [2023-08-29 19:47:02,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25785 conditions, 10945 events. 6791/10945 cut-off events. For 4763/5283 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 80744 event pairs, 2413 based on Foata normal form. 1195/10039 useless extension candidates. Maximal degree in co-relation 25775. Up to 5154 conditions per place. [2023-08-29 19:47:02,607 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 50 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-29 19:47:02,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 415 flow [2023-08-29 19:47:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:47:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:47:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-08-29 19:47:02,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545851528384279 [2023-08-29 19:47:02,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-08-29 19:47:02,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-08-29 19:47:02,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:02,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-08-29 19:47:02,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,612 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 241 flow. Second operand 3 states and 381 transitions. [2023-08-29 19:47:02,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 415 flow [2023-08-29 19:47:02,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:47:02,626 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 253 flow [2023-08-29 19:47:02,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-29 19:47:02,627 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-29 19:47:02,627 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 253 flow [2023-08-29 19:47:02,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:02,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 19:47:02,627 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:02,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash 52814657, now seen corresponding path program 2 times [2023-08-29 19:47:02,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:02,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317765635] [2023-08-29 19:47:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:02,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:02,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317765635] [2023-08-29 19:47:02,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317765635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:02,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:02,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:47:02,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326038935] [2023-08-29 19:47:02,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:02,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:47:02,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:02,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:47:02,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:47:02,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 229 [2023-08-29 19:47:02,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 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) [2023-08-29 19:47:02,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:02,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 229 [2023-08-29 19:47:02,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:02,926 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 72#L748-4true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:02,926 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,926 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,926 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,926 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,927 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 72#L748-4true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:02,927 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,927 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,927 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,927 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-29 19:47:02,993 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), 49#L749-1true, Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:02,994 INFO L383 tUnfolder$Statistics]: this new event has 23 ancestors and is cut-off event [2023-08-29 19:47:02,994 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-29 19:47:02,994 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-29 19:47:02,994 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-29 19:47:02,994 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), 49#L749-1true, Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:02,995 INFO L383 tUnfolder$Statistics]: this new event has 23 ancestors and is cut-off event [2023-08-29 19:47:02,995 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-29 19:47:02,995 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-29 19:47:02,995 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-29 19:47:03,082 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, 123#L749-2true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:03,082 INFO L383 tUnfolder$Statistics]: this new event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,082 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,082 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,082 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,082 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, 123#L749-2true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:03,082 INFO L383 tUnfolder$Statistics]: this new event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,083 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,083 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,083 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-29 19:47:03,191 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 125#L750-1true, 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:03,191 INFO L383 tUnfolder$Statistics]: this new event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,191 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,191 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,191 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,192 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), 125#L750-1true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-29 19:47:03,192 INFO L383 tUnfolder$Statistics]: this new event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,192 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,192 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,192 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-29 19:47:03,323 INFO L130 PetriNetUnfolder]: 7695/12816 cut-off events. [2023-08-29 19:47:03,323 INFO L131 PetriNetUnfolder]: For 10298/10929 co-relation queries the response was YES. [2023-08-29 19:47:03,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33745 conditions, 12816 events. 7695/12816 cut-off events. For 10298/10929 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 102848 event pairs, 1408 based on Foata normal form. 651/10948 useless extension candidates. Maximal degree in co-relation 33734. Up to 3555 conditions per place. [2023-08-29 19:47:03,361 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 91 selfloop transitions, 19 changer transitions 0/136 dead transitions. [2023-08-29 19:47:03,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 136 transitions, 727 flow [2023-08-29 19:47:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:47:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:47:03,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2023-08-29 19:47:03,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5624454148471616 [2023-08-29 19:47:03,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2023-08-29 19:47:03,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2023-08-29 19:47:03,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:03,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2023-08-29 19:47:03,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,366 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 253 flow. Second operand 5 states and 644 transitions. [2023-08-29 19:47:03,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 136 transitions, 727 flow [2023-08-29 19:47:03,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 136 transitions, 707 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:47:03,388 INFO L231 Difference]: Finished difference. Result has 63 places, 75 transitions, 341 flow [2023-08-29 19:47:03,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=63, PETRI_TRANSITIONS=75} [2023-08-29 19:47:03,389 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-08-29 19:47:03,389 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 75 transitions, 341 flow [2023-08-29 19:47:03,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 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) [2023-08-29 19:47:03,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:03,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:03,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 19:47:03,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:03,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:03,390 INFO L85 PathProgramCache]: Analyzing trace with hash 65619719, now seen corresponding path program 1 times [2023-08-29 19:47:03,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:03,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237723766] [2023-08-29 19:47:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:03,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:03,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:03,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237723766] [2023-08-29 19:47:03,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237723766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173457290] [2023-08-29 19:47:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:03,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:03,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:03,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-29 19:47:03,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:03,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-29 19:47:03,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:05,348 INFO L130 PetriNetUnfolder]: 23339/36324 cut-off events. [2023-08-29 19:47:05,348 INFO L131 PetriNetUnfolder]: For 33473/34386 co-relation queries the response was YES. [2023-08-29 19:47:05,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106735 conditions, 36324 events. 23339/36324 cut-off events. For 33473/34386 co-relation queries the response was YES. Maximal size of possible extension queue 2256. Compared 283976 event pairs, 4899 based on Foata normal form. 913/33984 useless extension candidates. Maximal degree in co-relation 106724. Up to 16312 conditions per place. [2023-08-29 19:47:05,467 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 233 selfloop transitions, 68 changer transitions 1/306 dead transitions. [2023-08-29 19:47:05,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 306 transitions, 1975 flow [2023-08-29 19:47:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:47:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:47:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 990 transitions. [2023-08-29 19:47:05,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403930131004366 [2023-08-29 19:47:05,470 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 990 transitions. [2023-08-29 19:47:05,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 990 transitions. [2023-08-29 19:47:05,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:05,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 990 transitions. [2023-08-29 19:47:05,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.75) internal successors, (990), 8 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,474 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,474 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 341 flow. Second operand 8 states and 990 transitions. [2023-08-29 19:47:05,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 306 transitions, 1975 flow [2023-08-29 19:47:05,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 306 transitions, 1967 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-29 19:47:05,604 INFO L231 Difference]: Finished difference. Result has 76 places, 139 transitions, 984 flow [2023-08-29 19:47:05,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=76, PETRI_TRANSITIONS=139} [2023-08-29 19:47:05,604 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2023-08-29 19:47:05,605 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 139 transitions, 984 flow [2023-08-29 19:47:05,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:05,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 19:47:05,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:05,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1046930815, now seen corresponding path program 1 times [2023-08-29 19:47:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:05,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872942544] [2023-08-29 19:47:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:05,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872942544] [2023-08-29 19:47:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872942544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:05,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198867213] [2023-08-29 19:47:05,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:05,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:05,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 229 [2023-08-29 19:47:05,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 139 transitions, 984 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:05,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 229 [2023-08-29 19:47:05,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:06,014 INFO L130 PetriNetUnfolder]: 2278/4677 cut-off events. [2023-08-29 19:47:06,015 INFO L131 PetriNetUnfolder]: For 7419/7691 co-relation queries the response was YES. [2023-08-29 19:47:06,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15164 conditions, 4677 events. 2278/4677 cut-off events. For 7419/7691 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 36671 event pairs, 286 based on Foata normal form. 401/4853 useless extension candidates. Maximal degree in co-relation 15147. Up to 1072 conditions per place. [2023-08-29 19:47:06,034 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 100 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2023-08-29 19:47:06,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 171 transitions, 1142 flow [2023-08-29 19:47:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:47:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:47:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2023-08-29 19:47:06,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509461426491994 [2023-08-29 19:47:06,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 757 transitions. [2023-08-29 19:47:06,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 757 transitions. [2023-08-29 19:47:06,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:06,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 757 transitions. [2023-08-29 19:47:06,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.16666666666667) internal successors, (757), 6 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,039 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,039 INFO L175 Difference]: Start difference. First operand has 76 places, 139 transitions, 984 flow. Second operand 6 states and 757 transitions. [2023-08-29 19:47:06,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 171 transitions, 1142 flow [2023-08-29 19:47:06,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 171 transitions, 1126 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-29 19:47:06,055 INFO L231 Difference]: Finished difference. Result has 82 places, 103 transitions, 686 flow [2023-08-29 19:47:06,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=686, PETRI_PLACES=82, PETRI_TRANSITIONS=103} [2023-08-29 19:47:06,055 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-29 19:47:06,055 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 103 transitions, 686 flow [2023-08-29 19:47:06,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:06,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:06,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 19:47:06,056 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:06,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash 197897927, now seen corresponding path program 1 times [2023-08-29 19:47:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696919597] [2023-08-29 19:47:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:06,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696919597] [2023-08-29 19:47:06,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696919597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:06,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:06,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:06,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831329396] [2023-08-29 19:47:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:06,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-29 19:47:06,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 103 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:06,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-29 19:47:06,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:06,644 INFO L130 PetriNetUnfolder]: 3111/5750 cut-off events. [2023-08-29 19:47:06,644 INFO L131 PetriNetUnfolder]: For 10973/11039 co-relation queries the response was YES. [2023-08-29 19:47:06,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21112 conditions, 5750 events. 3111/5750 cut-off events. For 10973/11039 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 40090 event pairs, 469 based on Foata normal form. 112/5707 useless extension candidates. Maximal degree in co-relation 21093. Up to 2333 conditions per place. [2023-08-29 19:47:06,668 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 175 selfloop transitions, 47 changer transitions 4/230 dead transitions. [2023-08-29 19:47:06,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 230 transitions, 1777 flow [2023-08-29 19:47:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:47:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:47:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 980 transitions. [2023-08-29 19:47:06,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349344978165939 [2023-08-29 19:47:06,671 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 980 transitions. [2023-08-29 19:47:06,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 980 transitions. [2023-08-29 19:47:06,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:06,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 980 transitions. [2023-08-29 19:47:06,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.5) internal successors, (980), 8 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,675 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,675 INFO L175 Difference]: Start difference. First operand has 82 places, 103 transitions, 686 flow. Second operand 8 states and 980 transitions. [2023-08-29 19:47:06,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 230 transitions, 1777 flow [2023-08-29 19:47:06,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 230 transitions, 1712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:47:06,698 INFO L231 Difference]: Finished difference. Result has 90 places, 114 transitions, 900 flow [2023-08-29 19:47:06,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=900, PETRI_PLACES=90, PETRI_TRANSITIONS=114} [2023-08-29 19:47:06,699 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 22 predicate places. [2023-08-29 19:47:06,699 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 114 transitions, 900 flow [2023-08-29 19:47:06,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:06,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:06,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 19:47:06,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:06,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash 958119990, now seen corresponding path program 1 times [2023-08-29 19:47:06,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:06,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923707607] [2023-08-29 19:47:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:06,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:06,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:06,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923707607] [2023-08-29 19:47:06,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923707607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:06,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:06,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155854141] [2023-08-29 19:47:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:06,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:06,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-29 19:47:06,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 114 transitions, 900 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:06,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-29 19:47:06,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:07,224 INFO L130 PetriNetUnfolder]: 2842/5289 cut-off events. [2023-08-29 19:47:07,225 INFO L131 PetriNetUnfolder]: For 13723/13852 co-relation queries the response was YES. [2023-08-29 19:47:07,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20068 conditions, 5289 events. 2842/5289 cut-off events. For 13723/13852 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36213 event pairs, 379 based on Foata normal form. 177/5431 useless extension candidates. Maximal degree in co-relation 20045. Up to 2165 conditions per place. [2023-08-29 19:47:07,247 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 178 selfloop transitions, 56 changer transitions 0/240 dead transitions. [2023-08-29 19:47:07,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 240 transitions, 1971 flow [2023-08-29 19:47:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:47:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:47:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 977 transitions. [2023-08-29 19:47:07,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5332969432314411 [2023-08-29 19:47:07,249 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 977 transitions. [2023-08-29 19:47:07,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 977 transitions. [2023-08-29 19:47:07,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:07,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 977 transitions. [2023-08-29 19:47:07,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.125) internal successors, (977), 8 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,253 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,253 INFO L175 Difference]: Start difference. First operand has 90 places, 114 transitions, 900 flow. Second operand 8 states and 977 transitions. [2023-08-29 19:47:07,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 240 transitions, 1971 flow [2023-08-29 19:47:07,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 240 transitions, 1962 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 19:47:07,284 INFO L231 Difference]: Finished difference. Result has 97 places, 127 transitions, 1180 flow [2023-08-29 19:47:07,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1180, PETRI_PLACES=97, PETRI_TRANSITIONS=127} [2023-08-29 19:47:07,284 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2023-08-29 19:47:07,284 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 127 transitions, 1180 flow [2023-08-29 19:47:07,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:07,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 19:47:07,285 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:07,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash -757095109, now seen corresponding path program 1 times [2023-08-29 19:47:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:07,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202989615] [2023-08-29 19:47:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:07,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:07,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:07,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202989615] [2023-08-29 19:47:07,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202989615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:07,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:07,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 19:47:07,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661697680] [2023-08-29 19:47:07,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:07,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:47:07,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:47:07,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:47:07,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 229 [2023-08-29 19:47:07,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 127 transitions, 1180 flow. Second operand has 6 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:07,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 229 [2023-08-29 19:47:07,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:07,707 INFO L130 PetriNetUnfolder]: 1729/3936 cut-off events. [2023-08-29 19:47:07,707 INFO L131 PetriNetUnfolder]: For 11492/11729 co-relation queries the response was YES. [2023-08-29 19:47:07,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15297 conditions, 3936 events. 1729/3936 cut-off events. For 11492/11729 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31631 event pairs, 184 based on Foata normal form. 313/4214 useless extension candidates. Maximal degree in co-relation 15270. Up to 679 conditions per place. [2023-08-29 19:47:07,733 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 99 selfloop transitions, 23 changer transitions 0/188 dead transitions. [2023-08-29 19:47:07,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 1597 flow [2023-08-29 19:47:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:47:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:47:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 860 transitions. [2023-08-29 19:47:07,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364940736119775 [2023-08-29 19:47:07,735 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 860 transitions. [2023-08-29 19:47:07,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 860 transitions. [2023-08-29 19:47:07,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:07,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 860 transitions. [2023-08-29 19:47:07,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.85714285714286) internal successors, (860), 7 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,738 INFO L175 Difference]: Start difference. First operand has 97 places, 127 transitions, 1180 flow. Second operand 7 states and 860 transitions. [2023-08-29 19:47:07,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 1597 flow [2023-08-29 19:47:07,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 188 transitions, 1588 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 19:47:07,773 INFO L231 Difference]: Finished difference. Result has 103 places, 121 transitions, 1123 flow [2023-08-29 19:47:07,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1123, PETRI_PLACES=103, PETRI_TRANSITIONS=121} [2023-08-29 19:47:07,773 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2023-08-29 19:47:07,773 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 121 transitions, 1123 flow [2023-08-29 19:47:07,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:07,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:07,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 19:47:07,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:07,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1672700721, now seen corresponding path program 2 times [2023-08-29 19:47:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524311418] [2023-08-29 19:47:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:07,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:07,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524311418] [2023-08-29 19:47:07,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524311418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:07,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:07,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:07,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076452786] [2023-08-29 19:47:07,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:07,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:07,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:07,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 229 [2023-08-29 19:47:07,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 121 transitions, 1123 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:07,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 229 [2023-08-29 19:47:07,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:08,113 INFO L130 PetriNetUnfolder]: 892/2242 cut-off events. [2023-08-29 19:47:08,113 INFO L131 PetriNetUnfolder]: For 8853/9005 co-relation queries the response was YES. [2023-08-29 19:47:08,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9542 conditions, 2242 events. 892/2242 cut-off events. For 8853/9005 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16895 event pairs, 150 based on Foata normal form. 148/2362 useless extension candidates. Maximal degree in co-relation 9513. Up to 676 conditions per place. [2023-08-29 19:47:08,121 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 69 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2023-08-29 19:47:08,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 120 transitions, 982 flow [2023-08-29 19:47:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:47:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:47:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-08-29 19:47:08,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493449781659389 [2023-08-29 19:47:08,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-08-29 19:47:08,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-08-29 19:47:08,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:08,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-08-29 19:47:08,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,125 INFO L175 Difference]: Start difference. First operand has 103 places, 121 transitions, 1123 flow. Second operand 5 states and 629 transitions. [2023-08-29 19:47:08,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 120 transitions, 982 flow [2023-08-29 19:47:08,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 120 transitions, 816 flow, removed 14 selfloop flow, removed 18 redundant places. [2023-08-29 19:47:08,143 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 563 flow [2023-08-29 19:47:08,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2023-08-29 19:47:08,143 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-08-29 19:47:08,143 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 563 flow [2023-08-29 19:47:08,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:08,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:08,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 19:47:08,144 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-29 19:47:08,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1553266787, now seen corresponding path program 1 times [2023-08-29 19:47:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:47:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377490546] [2023-08-29 19:47:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:47:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:09,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:47:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377490546] [2023-08-29 19:47:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377490546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:09,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:09,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 19:47:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219245175] [2023-08-29 19:47:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 19:47:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:47:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 19:47:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-29 19:47:10,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 229 [2023-08-29 19:47:10,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 563 flow. Second operand has 10 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:10,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:10,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 229 [2023-08-29 19:47:10,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:10,770 INFO L130 PetriNetUnfolder]: 907/2092 cut-off events. [2023-08-29 19:47:10,770 INFO L131 PetriNetUnfolder]: For 4470/4602 co-relation queries the response was YES. [2023-08-29 19:47:10,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7709 conditions, 2092 events. 907/2092 cut-off events. For 4470/4602 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15009 event pairs, 491 based on Foata normal form. 57/2072 useless extension candidates. Maximal degree in co-relation 7691. Up to 1636 conditions per place. [2023-08-29 19:47:10,776 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-08-29 19:47:10,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 97 transitions, 779 flow [2023-08-29 19:47:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:47:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:47:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 664 transitions. [2023-08-29 19:47:10,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41422333125389893 [2023-08-29 19:47:10,777 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 664 transitions. [2023-08-29 19:47:10,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 664 transitions. [2023-08-29 19:47:10,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:10,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 664 transitions. [2023-08-29 19:47:10,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:10,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:10,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:10,780 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 563 flow. Second operand 7 states and 664 transitions. [2023-08-29 19:47:10,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 97 transitions, 779 flow [2023-08-29 19:47:10,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 97 transitions, 755 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 19:47:10,786 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2023-08-29 19:47:10,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2023-08-29 19:47:10,786 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 19 predicate places. [2023-08-29 19:47:10,787 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2023-08-29 19:47:10,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:10,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2023-08-29 19:47:10,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2023-08-29 19:47:10,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2023-08-29 19:47:10,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2023-08-29 19:47:10,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2023-08-29 19:47:10,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2023-08-29 19:47:10,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2023-08-29 19:47:10,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2023-08-29 19:47:10,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2023-08-29 19:47:10,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2023-08-29 19:47:10,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2023-08-29 19:47:10,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2023-08-29 19:47:10,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2023-08-29 19:47:10,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2023-08-29 19:47:10,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2023-08-29 19:47:10,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2023-08-29 19:47:10,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2023-08-29 19:47:10,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (6 of 24 remaining) [2023-08-29 19:47:10,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 24 remaining) [2023-08-29 19:47:10,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2023-08-29 19:47:10,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2023-08-29 19:47:10,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2023-08-29 19:47:10,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 24 remaining) [2023-08-29 19:47:10,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2023-08-29 19:47:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 19:47:10,795 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:10,798 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:47:10,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:47:10,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:47:10 BasicIcfg [2023-08-29 19:47:10,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:47:10,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:47:10,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:47:10,800 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:47:10,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:50" (3/4) ... [2023-08-29 19:47:10,802 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 19:47:10,805 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-08-29 19:47:10,805 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-08-29 19:47:10,807 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-29 19:47:10,807 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 19:47:10,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 19:47:10,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 19:47:10,825 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 19:47:10,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:47:10,826 INFO L158 Benchmark]: Toolchain (without parser) took 20770.57ms. Allocated memory was 104.9MB in the beginning and 5.7GB in the end (delta: 5.6GB). Free memory was 81.8MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-29 19:47:10,826 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:47:10,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.89ms. Allocated memory is still 104.9MB. Free memory was 81.4MB in the beginning and 61.4MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-29 19:47:10,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.38ms. Allocated memory is still 104.9MB. Free memory was 61.4MB in the beginning and 59.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:47:10,827 INFO L158 Benchmark]: Boogie Preprocessor took 38.77ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 57.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:47:10,827 INFO L158 Benchmark]: RCFGBuilder took 446.67ms. Allocated memory is still 104.9MB. Free memory was 57.6MB in the beginning and 69.5MB in the end (delta: -11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-29 19:47:10,827 INFO L158 Benchmark]: TraceAbstraction took 19852.88ms. Allocated memory was 104.9MB in the beginning and 5.7GB in the end (delta: 5.6GB). Free memory was 69.0MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-08-29 19:47:10,827 INFO L158 Benchmark]: Witness Printer took 25.42ms. Allocated memory is still 5.7GB. Free memory was 4.3GB in the beginning and 4.3GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:47:10,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.89ms. Allocated memory is still 104.9MB. Free memory was 81.4MB in the beginning and 61.4MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.38ms. Allocated memory is still 104.9MB. Free memory was 61.4MB in the beginning and 59.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.77ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 57.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.67ms. Allocated memory is still 104.9MB. Free memory was 57.6MB in the beginning and 69.5MB in the end (delta: -11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 19852.88ms. Allocated memory was 104.9MB in the beginning and 5.7GB in the end (delta: 5.6GB). Free memory was 69.0MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 25.42ms. Allocated memory is still 5.7GB. Free memory was 4.3GB in the beginning and 4.3GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 131 PlacesBefore, 68 PlacesAfterwards, 120 TransitionsBefore, 57 TransitionsAfterwards, 3048 CoEnabledTransitionPairs, 5 FixpointIterations, 38 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 101 TotalNumberOfCompositions, 10807 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4506, independent: 4275, independent conditional: 0, independent unconditional: 4275, dependent: 231, dependent conditional: 0, dependent unconditional: 231, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1554, independent: 1519, independent conditional: 0, independent unconditional: 1519, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4506, independent: 2756, independent conditional: 0, independent unconditional: 2756, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 1554, unknown conditional: 0, unknown unconditional: 1554] , Statistics on independence cache: Total cache size (in pairs): 300, Positive cache size: 279, Positive conditional cache size: 0, Positive unconditional cache size: 279, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 739]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 743]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 152 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.7s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2311 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1717 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4483 IncrementalHoareTripleChecker+Invalid, 4676 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 174 mSDtfsCounter, 4483 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1180occurred in iteration=16, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 2532 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 19:47:10,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE