./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:57:18,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:57:18,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:57:18,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:57:18,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:57:18,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:57:18,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:57:18,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:57:18,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:57:18,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:57:18,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:57:18,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:57:18,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:57:18,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:57:18,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:57:18,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:57:18,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:57:18,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:57:18,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:57:18,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:57:18,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:57:18,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:57:18,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:57:18,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:57:18,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:57:18,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:57:18,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:57:18,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:57:18,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:57:18,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:57:18,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:57:18,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:57:18,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:57:18,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:57:18,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:57:18,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:57:18,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:57:18,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:57:18,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:57:18,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:57:18,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:57:18,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:57:18,750 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:57:18,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:57:18,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:57:18,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:57:18,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:57:18,753 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:57:18,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:57:18,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:57:18,754 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:57:18,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:57:18,755 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:57:18,755 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:57:18,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:57:18,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:57:18,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:57:18,756 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:57:18,756 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:57:18,756 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:57:18,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:57:18,757 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:57:18,757 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:57:18,757 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:57:18,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:57:18,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:57:18,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:57:18,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:57:18,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:57:18,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:57:18,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:57:18,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:57:18,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:57:18,759 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:57:18,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:57:18,760 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:57:18,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:57:19,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:57:19,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:57:19,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:57:19,109 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:57:19,109 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:57:19,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-08-30 05:57:20,321 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:57:20,527 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:57:20,528 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-08-30 05:57:20,533 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a68a402f/0b48b94a08734e5bb3abd78365a25cd6/FLAG75abf472e [2023-08-30 05:57:20,544 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a68a402f/0b48b94a08734e5bb3abd78365a25cd6 [2023-08-30 05:57:20,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:57:20,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:57:20,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:57:20,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:57:20,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:57:20,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332a5e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20, skipping insertion in model container [2023-08-30 05:57:20,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:57:20,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:57:20,713 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2023-08-30 05:57:20,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:57:20,727 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:57:20,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2023-08-30 05:57:20,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:57:20,770 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:57:20,772 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:57:20,778 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:57:20,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20 WrapperNode [2023-08-30 05:57:20,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:57:20,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:57:20,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:57:20,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:57:20,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,838 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 124 [2023-08-30 05:57:20,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:57:20,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:57:20,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:57:20,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:57:20,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:57:20,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:57:20,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:57:20,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:57:20,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (1/1) ... [2023-08-30 05:57:20,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:57:20,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:57:20,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:57:20,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:57:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:57:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:57:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:57:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:57:20,959 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:57:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:57:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:57:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:57:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:57:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:57:20,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:57:20,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:57:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:57:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:57:20,961 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:57:21,065 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:57:21,067 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:57:21,393 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:57:21,460 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:57:21,460 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 05:57:21,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:21 BoogieIcfgContainer [2023-08-30 05:57:21,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:57:21,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:57:21,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:57:21,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:57:21,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:57:20" (1/3) ... [2023-08-30 05:57:21,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:57:21, skipping insertion in model container [2023-08-30 05:57:21,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:57:20" (2/3) ... [2023-08-30 05:57:21,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:57:21, skipping insertion in model container [2023-08-30 05:57:21,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:21" (3/3) ... [2023-08-30 05:57:21,469 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2023-08-30 05:57:21,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:57:21,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 05:57:21,493 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:57:21,576 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 05:57:21,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 230 flow [2023-08-30 05:57:21,686 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2023-08-30 05:57:21,687 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:57:21,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 2/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-30 05:57:21,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 107 transitions, 230 flow [2023-08-30 05:57:21,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 101 transitions, 214 flow [2023-08-30 05:57:21,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:57:21,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 101 transitions, 214 flow [2023-08-30 05:57:21,718 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 101 transitions, 214 flow [2023-08-30 05:57:21,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 101 transitions, 214 flow [2023-08-30 05:57:21,756 INFO L130 PetriNetUnfolder]: 2/101 cut-off events. [2023-08-30 05:57:21,757 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:57:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 2/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-30 05:57:21,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 386 [2023-08-30 05:57:25,642 INFO L134 LiptonReduction]: Checked pairs total: 2213 [2023-08-30 05:57:25,642 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-30 05:57:25,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:57:25,660 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;@dab6ade, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:57:25,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 05:57:25,661 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:57:25,662 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:57:25,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:25,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:57:25,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:25,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash 419, now seen corresponding path program 1 times [2023-08-30 05:57:25,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:25,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145088180] [2023-08-30 05:57:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:25,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:25,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:25,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145088180] [2023-08-30 05:57:25,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145088180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:25,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:25,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:57:25,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135925383] [2023-08-30 05:57:25,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:57:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:57:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:57:25,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2023-08-30 05:57:25,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:25,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:25,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2023-08-30 05:57:25,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:25,903 INFO L130 PetriNetUnfolder]: 105/228 cut-off events. [2023-08-30 05:57:25,903 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 05:57:25,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 228 events. 105/228 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 928 event pairs, 105 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 376. Up to 205 conditions per place. [2023-08-30 05:57:25,907 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 21 selfloop transitions, 0 changer transitions 0/24 dead transitions. [2023-08-30 05:57:25,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 102 flow [2023-08-30 05:57:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:57:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:57:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 212 transitions. [2023-08-30 05:57:25,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145631067961165 [2023-08-30 05:57:25,923 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 212 transitions. [2023-08-30 05:57:25,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 212 transitions. [2023-08-30 05:57:25,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:25,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 212 transitions. [2023-08-30 05:57:25,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:25,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:25,939 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:25,940 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 2 states and 212 transitions. [2023-08-30 05:57:25,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 102 flow [2023-08-30 05:57:25,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:57:25,945 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 52 flow [2023-08-30 05:57:25,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-08-30 05:57:25,950 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -6 predicate places. [2023-08-30 05:57:25,950 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 52 flow [2023-08-30 05:57:25,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:25,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:25,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:57:25,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:57:25,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:25,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:25,962 INFO L85 PathProgramCache]: Analyzing trace with hash 410921, now seen corresponding path program 1 times [2023-08-30 05:57:25,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:25,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581035486] [2023-08-30 05:57:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:25,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:26,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:26,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581035486] [2023-08-30 05:57:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581035486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:26,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:26,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:57:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271827457] [2023-08-30 05:57:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:26,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:57:26,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:57:26,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:57:26,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2023-08-30 05:57:26,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:26,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2023-08-30 05:57:26,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:26,261 INFO L130 PetriNetUnfolder]: 99/212 cut-off events. [2023-08-30 05:57:26,262 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:57:26,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 212 events. 99/212 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 828 event pairs, 99 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 407. Up to 190 conditions per place. [2023-08-30 05:57:26,266 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 05:57:26,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 86 flow [2023-08-30 05:57:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-30 05:57:26,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46601941747572817 [2023-08-30 05:57:26,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-30 05:57:26,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-30 05:57:26,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:26,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-30 05:57:26,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,278 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 52 flow. Second operand 3 states and 288 transitions. [2023-08-30 05:57:26,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 86 flow [2023-08-30 05:57:26,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:57:26,280 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2023-08-30 05:57:26,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-30 05:57:26,281 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -6 predicate places. [2023-08-30 05:57:26,281 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2023-08-30 05:57:26,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:26,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:57:26,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:57:26,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:26,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash 410922, now seen corresponding path program 1 times [2023-08-30 05:57:26,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:26,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68532194] [2023-08-30 05:57:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:26,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:26,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:26,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68532194] [2023-08-30 05:57:26,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68532194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:26,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:26,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:57:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772121685] [2023-08-30 05:57:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:26,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:57:26,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:26,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:57:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:57:26,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-30 05:57:26,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:26,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-30 05:57:26,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:26,441 INFO L130 PetriNetUnfolder]: 93/196 cut-off events. [2023-08-30 05:57:26,441 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:57:26,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 196 events. 93/196 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 768 event pairs, 93 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 378. Up to 176 conditions per place. [2023-08-30 05:57:26,443 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 16 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-30 05:57:26,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 80 flow [2023-08-30 05:57:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2023-08-30 05:57:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44336569579288027 [2023-08-30 05:57:26,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2023-08-30 05:57:26,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2023-08-30 05:57:26,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:26,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2023-08-30 05:57:26,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,449 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 3 states and 274 transitions. [2023-08-30 05:57:26,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 80 flow [2023-08-30 05:57:26,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 79 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:26,450 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 47 flow [2023-08-30 05:57:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-30 05:57:26,451 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -7 predicate places. [2023-08-30 05:57:26,451 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 47 flow [2023-08-30 05:57:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:26,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:57:26,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:57:26,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:26,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 394903383, now seen corresponding path program 1 times [2023-08-30 05:57:26,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:26,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83794205] [2023-08-30 05:57:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:26,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83794205] [2023-08-30 05:57:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83794205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:26,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:26,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:57:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697068647] [2023-08-30 05:57:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:57:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:57:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:57:26,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-08-30 05:57:26,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:26,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-08-30 05:57:26,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:26,656 INFO L130 PetriNetUnfolder]: 69/152 cut-off events. [2023-08-30 05:57:26,658 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:57:26,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 152 events. 69/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 532 event pairs, 69 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 295. Up to 136 conditions per place. [2023-08-30 05:57:26,659 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 15 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 05:57:26,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 77 flow [2023-08-30 05:57:26,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-30 05:57:26,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42071197411003236 [2023-08-30 05:57:26,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-30 05:57:26,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-30 05:57:26,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:26,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-30 05:57:26,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,669 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 47 flow. Second operand 3 states and 260 transitions. [2023-08-30 05:57:26,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 77 flow [2023-08-30 05:57:26,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:26,670 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 46 flow [2023-08-30 05:57:26,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-30 05:57:26,671 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -7 predicate places. [2023-08-30 05:57:26,672 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 46 flow [2023-08-30 05:57:26,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:26,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:57:26,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:57:26,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:26,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 394903385, now seen corresponding path program 1 times [2023-08-30 05:57:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708580811] [2023-08-30 05:57:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:26,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:26,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708580811] [2023-08-30 05:57:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708580811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:26,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:26,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:57:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158792707] [2023-08-30 05:57:26,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:26,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:57:26,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:26,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:57:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:57:26,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-30 05:57:26,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:26,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-30 05:57:26,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:26,885 INFO L130 PetriNetUnfolder]: 45/108 cut-off events. [2023-08-30 05:57:26,885 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:57:26,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 108 events. 45/108 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 329 event pairs, 45 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 212. Up to 96 conditions per place. [2023-08-30 05:57:26,889 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 14 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-30 05:57:26,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 74 flow [2023-08-30 05:57:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:57:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:57:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-30 05:57:26,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43851132686084143 [2023-08-30 05:57:26,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-30 05:57:26,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-30 05:57:26,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:26,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-30 05:57:26,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,895 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 46 flow. Second operand 3 states and 271 transitions. [2023-08-30 05:57:26,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 74 flow [2023-08-30 05:57:26,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 73 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:26,896 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 45 flow [2023-08-30 05:57:26,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-30 05:57:26,899 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -7 predicate places. [2023-08-30 05:57:26,899 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 45 flow [2023-08-30 05:57:26,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:26,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:26,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:26,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:57:26,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:26,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1945991024, now seen corresponding path program 1 times [2023-08-30 05:57:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223127] [2023-08-30 05:57:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:26,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:27,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:27,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223127] [2023-08-30 05:57:27,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:27,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:27,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:57:27,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200616190] [2023-08-30 05:57:27,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:27,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:57:27,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:57:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:57:28,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 206 [2023-08-30 05:57:28,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 8 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:28,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 206 [2023-08-30 05:57:28,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:28,323 INFO L130 PetriNetUnfolder]: 145/296 cut-off events. [2023-08-30 05:57:28,324 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:57:28,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 296 events. 145/296 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1125 event pairs, 68 based on Foata normal form. 2/298 useless extension candidates. Maximal degree in co-relation 603. Up to 119 conditions per place. [2023-08-30 05:57:28,326 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 29 selfloop transitions, 7 changer transitions 16/52 dead transitions. [2023-08-30 05:57:28,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 52 transitions, 223 flow [2023-08-30 05:57:28,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:57:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:57:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2023-08-30 05:57:28,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38210818307905686 [2023-08-30 05:57:28,329 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2023-08-30 05:57:28,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2023-08-30 05:57:28,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:28,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2023-08-30 05:57:28,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,349 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,349 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 7 states and 551 transitions. [2023-08-30 05:57:28,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 52 transitions, 223 flow [2023-08-30 05:57:28,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 52 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:57:28,351 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 89 flow [2023-08-30 05:57:28,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=89, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-08-30 05:57:28,352 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-30 05:57:28,352 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 89 flow [2023-08-30 05:57:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:28,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:28,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:57:28,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:28,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:28,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1499856012, now seen corresponding path program 2 times [2023-08-30 05:57:28,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:28,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843758074] [2023-08-30 05:57:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:28,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843758074] [2023-08-30 05:57:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843758074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:28,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:28,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 05:57:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484035032] [2023-08-30 05:57:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:57:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:57:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:57:28,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-30 05:57:28,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:28,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-30 05:57:28,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:28,715 INFO L130 PetriNetUnfolder]: 27/80 cut-off events. [2023-08-30 05:57:28,715 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-30 05:57:28,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 80 events. 27/80 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 196 event pairs, 4 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 203. Up to 22 conditions per place. [2023-08-30 05:57:28,716 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 15 selfloop transitions, 4 changer transitions 9/31 dead transitions. [2023-08-30 05:57:28,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 159 flow [2023-08-30 05:57:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:57:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:57:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 526 transitions. [2023-08-30 05:57:28,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255663430420712 [2023-08-30 05:57:28,719 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 526 transitions. [2023-08-30 05:57:28,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 526 transitions. [2023-08-30 05:57:28,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:28,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 526 transitions. [2023-08-30 05:57:28,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,724 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,724 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 89 flow. Second operand 6 states and 526 transitions. [2023-08-30 05:57:28,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 159 flow [2023-08-30 05:57:28,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 31 transitions, 149 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 05:57:28,727 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 81 flow [2023-08-30 05:57:28,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-08-30 05:57:28,728 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 05:57:28,728 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 81 flow [2023-08-30 05:57:28,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:28,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:28,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:57:28,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:57:28,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1418966156, now seen corresponding path program 3 times [2023-08-30 05:57:28,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:28,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591463303] [2023-08-30 05:57:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591463303] [2023-08-30 05:57:28,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591463303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:57:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:57:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:57:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003383312] [2023-08-30 05:57:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:57:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:57:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:57:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:57:28,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-30 05:57:28,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:28,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-30 05:57:28,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:28,917 INFO L130 PetriNetUnfolder]: 6/19 cut-off events. [2023-08-30 05:57:28,918 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 05:57:28,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 19 events. 6/19 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 4/23 useless extension candidates. Maximal degree in co-relation 60. Up to 8 conditions per place. [2023-08-30 05:57:28,918 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-30 05:57:28,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 11 transitions, 66 flow [2023-08-30 05:57:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:57:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:57:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2023-08-30 05:57:28,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429126213592233 [2023-08-30 05:57:28,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 442 transitions. [2023-08-30 05:57:28,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 442 transitions. [2023-08-30 05:57:28,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:28,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 442 transitions. [2023-08-30 05:57:28,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,924 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,924 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 81 flow. Second operand 5 states and 442 transitions. [2023-08-30 05:57:28,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 11 transitions, 66 flow [2023-08-30 05:57:28,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 11 transitions, 56 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 05:57:28,925 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-30 05:57:28,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-30 05:57:28,927 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -9 predicate places. [2023-08-30 05:57:28,927 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-30 05:57:28,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:28,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 05:57:28,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 05:57:28,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 05:57:28,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 05:57:28,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 05:57:28,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 05:57:28,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 05:57:28,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 05:57:28,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 05:57:28,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 05:57:28,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 05:57:28,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 05:57:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:57:28,934 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2023-08-30 05:57:28,937 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 05:57:28,937 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 05:57:28,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:57:28 BasicIcfg [2023-08-30 05:57:28,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 05:57:28,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 05:57:28,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 05:57:28,941 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 05:57:28,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:57:21" (3/4) ... [2023-08-30 05:57:28,943 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 05:57:28,948 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 05:57:28,948 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 05:57:28,952 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 05:57:28,952 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 05:57:28,952 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 05:57:28,953 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 05:57:28,986 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 05:57:28,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 05:57:28,987 INFO L158 Benchmark]: Toolchain (without parser) took 8440.23ms. Allocated memory was 75.5MB in the beginning and 155.2MB in the end (delta: 79.7MB). Free memory was 53.8MB in the beginning and 84.7MB in the end (delta: -31.0MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2023-08-30 05:57:28,987 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory was 54.0MB in the beginning and 53.9MB in the end (delta: 79.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:57:28,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.56ms. Allocated memory is still 75.5MB. Free memory was 53.8MB in the beginning and 42.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 05:57:28,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.17ms. Allocated memory is still 75.5MB. Free memory was 42.7MB in the beginning and 41.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:57:28,988 INFO L158 Benchmark]: Boogie Preprocessor took 46.37ms. Allocated memory is still 75.5MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:57:28,989 INFO L158 Benchmark]: RCFGBuilder took 575.40ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 39.7MB in the beginning and 75.9MB in the end (delta: -36.2MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-08-30 05:57:28,989 INFO L158 Benchmark]: TraceAbstraction took 7476.20ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 74.9MB in the beginning and 87.9MB in the end (delta: -13.0MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2023-08-30 05:57:28,989 INFO L158 Benchmark]: Witness Printer took 46.08ms. Allocated memory is still 155.2MB. Free memory was 87.9MB in the beginning and 84.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:57:28,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory was 54.0MB in the beginning and 53.9MB in the end (delta: 79.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.56ms. Allocated memory is still 75.5MB. Free memory was 53.8MB in the beginning and 42.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.17ms. Allocated memory is still 75.5MB. Free memory was 42.7MB in the beginning and 41.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.37ms. Allocated memory is still 75.5MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 575.40ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 39.7MB in the beginning and 75.9MB in the end (delta: -36.2MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7476.20ms. Allocated memory was 104.9MB in the beginning and 155.2MB in the end (delta: 50.3MB). Free memory was 74.9MB in the beginning and 87.9MB in the end (delta: -13.0MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. * Witness Printer took 46.08ms. Allocated memory is still 155.2MB. Free memory was 87.9MB in the beginning and 84.7MB 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: 3.9s, 106 PlacesBefore, 34 PlacesAfterwards, 101 TransitionsBefore, 27 TransitionsAfterwards, 386 CoEnabledTransitionPairs, 8 FixpointIterations, 74 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 2213 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1331, independent: 1189, independent conditional: 0, independent unconditional: 1189, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 225, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1331, independent: 974, independent conditional: 0, independent unconditional: 974, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 225, unknown conditional: 0, unknown unconditional: 225] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 102]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 82]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 123 locations, 12 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: 7.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 632 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 426 mSDsluCounter, 230 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 190 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 962 IncrementalHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 40 mSDtfsCounter, 962 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=6, InterpolantAutomatonStates: 32, 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, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 05:57:29,010 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