./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-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-misc-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 c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 --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 05:42:42,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:42:42,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:42:42,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:42:42,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:42:42,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:42:42,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:42:42,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:42:42,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:42:42,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:42:42,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:42:42,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:42:42,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:42:42,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:42:42,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:42:42,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:42:42,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:42:42,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:42:42,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:42:42,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:42:42,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:42:42,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:42:42,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:42:42,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:42:42,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:42:42,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:42:42,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:42:42,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:42:42,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:42:42,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:42:42,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:42:42,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:42:42,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:42:42,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:42:42,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:42:42,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:42:42,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:42:42,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:42:42,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:42:42,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:42:42,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:42:42,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:42:42,838 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:42:42,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:42:42,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:42:42,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:42:42,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:42:42,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:42:42,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:42:42,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:42:42,842 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:42:42,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:42:42,843 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:42:42,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:42:42,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:42:42,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:42:42,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:42:42,844 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:42:42,844 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:42:42,845 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:42:42,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:42:42,845 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:42:42,845 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:42:42,845 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:42:42,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:42:42,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:42:42,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:42:42,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:42:42,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:42:42,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:42:42,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:42:42,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:42:42,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:42:42,847 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:42:42,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:42:42,848 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:42:42,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:42:43,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:42:43,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:42:43,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:42:43,189 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:42:43,190 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:42:43,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-08-30 05:42:44,492 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:42:44,682 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:42:44,682 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-08-30 05:42:44,689 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fbc62224/3531eae3defc4b6a90d950a055770bdf/FLAGc0756ea71 [2023-08-30 05:42:44,710 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fbc62224/3531eae3defc4b6a90d950a055770bdf [2023-08-30 05:42:44,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:42:44,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:42:44,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:42:44,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:42:44,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:42:44,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:44,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624dc626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44, skipping insertion in model container [2023-08-30 05:42:44,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:44,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:42:44,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:42:44,892 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-misc-2.wvr.c[2554,2567] [2023-08-30 05:42:44,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:42:44,905 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:42:44,923 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-misc-2.wvr.c[2554,2567] [2023-08-30 05:42:44,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:42:44,932 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:42:44,932 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:42:44,938 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:42:44,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44 WrapperNode [2023-08-30 05:42:44,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:42:44,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:42:44,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:42:44,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:42:44,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:44,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:44,991 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-30 05:42:44,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:42:44,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:42:44,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:42:44,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:42:45,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:42:45,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:42:45,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:42:45,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:42:45,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (1/1) ... [2023-08-30 05:42:45,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:42:45,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:42:45,087 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 05:42:45,109 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 05:42:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:42:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:42:45,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:42:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:42:45,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:42:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:42:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:42:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:42:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:42:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:42:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:42:45,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:42:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:42:45,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:42:45,136 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 05:42:45,237 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:42:45,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:42:45,471 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:42:45,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:42:45,505 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 05:42:45,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:42:45 BoogieIcfgContainer [2023-08-30 05:42:45,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:42:45,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:42:45,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:42:45,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:42:45,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:42:44" (1/3) ... [2023-08-30 05:42:45,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3732327f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:42:45, skipping insertion in model container [2023-08-30 05:42:45,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:42:44" (2/3) ... [2023-08-30 05:42:45,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3732327f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:42:45, skipping insertion in model container [2023-08-30 05:42:45,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:42:45" (3/3) ... [2023-08-30 05:42:45,517 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2023-08-30 05:42:45,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:42:45,531 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 05:42:45,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:42:45,599 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 05:42:45,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 246 flow [2023-08-30 05:42:45,718 INFO L130 PetriNetUnfolder]: 8/113 cut-off events. [2023-08-30 05:42:45,718 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:42:45,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 8/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-30 05:42:45,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 115 transitions, 246 flow [2023-08-30 05:42:45,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 109 transitions, 230 flow [2023-08-30 05:42:45,735 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:42:45,748 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 109 transitions, 230 flow [2023-08-30 05:42:45,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 109 transitions, 230 flow [2023-08-30 05:42:45,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 230 flow [2023-08-30 05:42:45,814 INFO L130 PetriNetUnfolder]: 8/109 cut-off events. [2023-08-30 05:42:45,814 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:42:45,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 8/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-30 05:42:45,817 INFO L119 LiptonReduction]: Number of co-enabled transitions 936 [2023-08-30 05:42:49,304 INFO L134 LiptonReduction]: Checked pairs total: 1185 [2023-08-30 05:42:49,304 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-30 05:42:49,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:42:49,322 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;@7f8a8790, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:42:49,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 05:42:49,323 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:42:49,324 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:42:49,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:49,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:42:49,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:49,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:49,329 INFO L85 PathProgramCache]: Analyzing trace with hash 447, now seen corresponding path program 1 times [2023-08-30 05:42:49,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:49,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192959232] [2023-08-30 05:42:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:49,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:49,415 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 05:42:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192959232] [2023-08-30 05:42:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192959232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:42:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050721518] [2023-08-30 05:42:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:49,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:42:49,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:49,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:42:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:42:49,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 233 [2023-08-30 05:42:49,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 05:42:49,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:49,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 233 [2023-08-30 05:42:49,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:49,488 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-08-30 05:42:49,488 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 05:42:49,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 45/80 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 144 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 124. Up to 81 conditions per place. [2023-08-30 05:42:49,490 INFO L137 encePairwiseOnDemand]: 230/233 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-30 05:42:49,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 88 flow [2023-08-30 05:42:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:42:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:42:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 230 transitions. [2023-08-30 05:42:49,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49356223175965663 [2023-08-30 05:42:49,502 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 230 transitions. [2023-08-30 05:42:49,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 230 transitions. [2023-08-30 05:42:49,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:49,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 230 transitions. [2023-08-30 05:42:49,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 05:42:49,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 05:42:49,512 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 05:42:49,514 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 230 transitions. [2023-08-30 05:42:49,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 88 flow [2023-08-30 05:42:49,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:42:49,518 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2023-08-30 05:42:49,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2023-08-30 05:42:49,522 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-30 05:42:49,522 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2023-08-30 05:42:49,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 05:42:49,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:49,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:42:49,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:42:49,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:49,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash 438197, now seen corresponding path program 1 times [2023-08-30 05:42:49,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:49,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171383970] [2023-08-30 05:42:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:49,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:49,695 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 05:42:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:49,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171383970] [2023-08-30 05:42:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171383970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:49,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:49,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:42:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189840017] [2023-08-30 05:42:49,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:49,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:42:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:42:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:42:49,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 233 [2023-08-30 05:42:49,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 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 05:42:49,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:49,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 233 [2023-08-30 05:42:49,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:49,797 INFO L130 PetriNetUnfolder]: 41/72 cut-off events. [2023-08-30 05:42:49,798 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:42:49,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 72 events. 41/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 147. Up to 72 conditions per place. [2023-08-30 05:42:49,800 INFO L137 encePairwiseOnDemand]: 230/233 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 05:42:49,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 72 flow [2023-08-30 05:42:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:42:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:42:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-30 05:42:49,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43490701001430615 [2023-08-30 05:42:49,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-30 05:42:49,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-30 05:42:49,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:49,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-30 05:42:49,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 05:42:49,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:49,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:49,812 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 304 transitions. [2023-08-30 05:42:49,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 72 flow [2023-08-30 05:42:49,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:42:49,813 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2023-08-30 05:42:49,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-30 05:42:49,814 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-30 05:42:49,814 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2023-08-30 05:42:49,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 05:42:49,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:49,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:42:49,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:42:49,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:49,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 438196, now seen corresponding path program 1 times [2023-08-30 05:42:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:49,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811260298] [2023-08-30 05:42:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:49,949 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 05:42:49,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811260298] [2023-08-30 05:42:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811260298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:49,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:49,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:42:49,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301110527] [2023-08-30 05:42:49,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:42:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:42:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:42:49,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2023-08-30 05:42:49,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:49,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:49,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2023-08-30 05:42:49,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:50,004 INFO L130 PetriNetUnfolder]: 37/64 cut-off events. [2023-08-30 05:42:50,005 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:42:50,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 64 events. 37/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-08-30 05:42:50,006 INFO L137 encePairwiseOnDemand]: 230/233 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 05:42:50,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 66 flow [2023-08-30 05:42:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:42:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:42:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-30 05:42:50,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492131616595136 [2023-08-30 05:42:50,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-30 05:42:50,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-30 05:42:50,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:50,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-30 05:42:50,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 05:42:50,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,011 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 314 transitions. [2023-08-30 05:42:50,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 66 flow [2023-08-30 05:42:50,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:42:50,012 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 37 flow [2023-08-30 05:42:50,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-08-30 05:42:50,012 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-30 05:42:50,013 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 37 flow [2023-08-30 05:42:50,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:50,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:50,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:42:50,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:42:50,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:50,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash 421114915, now seen corresponding path program 1 times [2023-08-30 05:42:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:50,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440609832] [2023-08-30 05:42:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:50,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:50,143 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 05:42:50,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:50,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440609832] [2023-08-30 05:42:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440609832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:50,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:42:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149314936] [2023-08-30 05:42:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:42:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:42:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:42:50,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 233 [2023-08-30 05:42:50,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:50,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:50,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 233 [2023-08-30 05:42:50,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:50,206 INFO L130 PetriNetUnfolder]: 29/52 cut-off events. [2023-08-30 05:42:50,208 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:42:50,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 52 events. 29/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 52 conditions per place. [2023-08-30 05:42:50,209 INFO L137 encePairwiseOnDemand]: 231/233 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-30 05:42:50,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 63 flow [2023-08-30 05:42:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:42:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:42:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-30 05:42:50,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44635193133047213 [2023-08-30 05:42:50,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-30 05:42:50,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-30 05:42:50,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:50,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-30 05:42:50,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:50,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,214 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 37 flow. Second operand 3 states and 312 transitions. [2023-08-30 05:42:50,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 63 flow [2023-08-30 05:42:50,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:42:50,227 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-30 05:42:50,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 05:42:50,229 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-30 05:42:50,229 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-30 05:42:50,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:50,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:50,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:42:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:42:50,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:50,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 421114914, now seen corresponding path program 1 times [2023-08-30 05:42:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647379239] [2023-08-30 05:42:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:50,328 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 05:42:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:50,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647379239] [2023-08-30 05:42:50,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647379239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:50,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:50,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:42:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384647235] [2023-08-30 05:42:50,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:50,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:42:50,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:42:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:42:50,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 233 [2023-08-30 05:42:50,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 05:42:50,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:50,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 233 [2023-08-30 05:42:50,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:50,414 INFO L130 PetriNetUnfolder]: 21/40 cut-off events. [2023-08-30 05:42:50,414 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:42:50,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 21/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 40 conditions per place. [2023-08-30 05:42:50,415 INFO L137 encePairwiseOnDemand]: 231/233 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-30 05:42:50,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 60 flow [2023-08-30 05:42:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:42:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:42:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-30 05:42:50,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105865522174535 [2023-08-30 05:42:50,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-30 05:42:50,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-30 05:42:50,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:50,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-30 05:42:50,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 05:42:50,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,420 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 287 transitions. [2023-08-30 05:42:50,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 60 flow [2023-08-30 05:42:50,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:42:50,421 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 35 flow [2023-08-30 05:42:50,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-30 05:42:50,421 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-30 05:42:50,422 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 35 flow [2023-08-30 05:42:50,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 05:42:50,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:50,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:50,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:42:50,423 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 05:42:50,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1317464909, now seen corresponding path program 1 times [2023-08-30 05:42:50,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:50,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751669720] [2023-08-30 05:42:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:50,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:50,532 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 05:42:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751669720] [2023-08-30 05:42:50,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751669720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:50,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:50,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:42:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393188496] [2023-08-30 05:42:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:50,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:42:50,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:50,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:42:50,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:42:50,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 233 [2023-08-30 05:42:50,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:50,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:50,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 233 [2023-08-30 05:42:50,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:50,584 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2023-08-30 05:42:50,584 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:42:50,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 77 events. 41/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 165 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 163. Up to 51 conditions per place. [2023-08-30 05:42:50,586 INFO L137 encePairwiseOnDemand]: 229/233 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-30 05:42:50,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 23 transitions, 104 flow [2023-08-30 05:42:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:42:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:42:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-08-30 05:42:50,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463519313304721 [2023-08-30 05:42:50,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-08-30 05:42:50,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-08-30 05:42:50,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:50,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-08-30 05:42:50,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:50,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 05:42:50,590 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 324 transitions. [2023-08-30 05:42:50,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 23 transitions, 104 flow [2023-08-30 05:42:50,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 23 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:42:50,591 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 53 flow [2023-08-30 05:42:50,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-30 05:42:50,592 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -5 predicate places. [2023-08-30 05:42:50,592 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 53 flow [2023-08-30 05:42:50,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:50,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:50,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:50,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:42:50,593 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 05:42:50,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1639768176, now seen corresponding path program 1 times [2023-08-30 05:42:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:50,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136923363] [2023-08-30 05:42:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:50,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:50,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136923363] [2023-08-30 05:42:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136923363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:50,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:50,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:42:50,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144744726] [2023-08-30 05:42:50,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:42:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:42:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:42:50,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 233 [2023-08-30 05:42:50,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 05:42:50,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:50,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 233 [2023-08-30 05:42:50,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:50,874 INFO L130 PetriNetUnfolder]: 53/103 cut-off events. [2023-08-30 05:42:50,875 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 05:42:50,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 103 events. 53/103 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 257 event pairs, 7 based on Foata normal form. 4/107 useless extension candidates. Maximal degree in co-relation 258. Up to 57 conditions per place. [2023-08-30 05:42:50,876 INFO L137 encePairwiseOnDemand]: 228/233 looper letters, 27 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2023-08-30 05:42:50,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 34 transitions, 175 flow [2023-08-30 05:42:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:42:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:42:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2023-08-30 05:42:50,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223175965665236 [2023-08-30 05:42:50,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2023-08-30 05:42:50,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2023-08-30 05:42:50,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:50,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2023-08-30 05:42:50,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 05:42:50,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states 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 05:42:50,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states 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 05:42:50,882 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 53 flow. Second operand 5 states and 492 transitions. [2023-08-30 05:42:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 34 transitions, 175 flow [2023-08-30 05:42:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 34 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:42:50,884 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 106 flow [2023-08-30 05:42:50,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-30 05:42:50,884 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-30 05:42:50,885 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 106 flow [2023-08-30 05:42:50,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 05:42:50,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:50,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:50,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:42:50,886 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 05:42:50,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:50,886 INFO L85 PathProgramCache]: Analyzing trace with hash -331430452, now seen corresponding path program 2 times [2023-08-30 05:42:50,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:50,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801452926] [2023-08-30 05:42:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:50,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801452926] [2023-08-30 05:42:50,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801452926] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:42:50,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680424087] [2023-08-30 05:42:50,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:42:50,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:42:50,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:42:50,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:42:51,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 05:42:51,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:42:51,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:42:51,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:42:51,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:42:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:51,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:42:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680424087] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:42:51,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:42:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 05:42:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343175874] [2023-08-30 05:42:51,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:42:51,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:42:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:42:51,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:42:51,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 233 [2023-08-30 05:42:51,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 05:42:51,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:51,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 233 [2023-08-30 05:42:51,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:51,706 INFO L130 PetriNetUnfolder]: 69/133 cut-off events. [2023-08-30 05:42:51,707 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 05:42:51,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 133 events. 69/133 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 368 event pairs, 11 based on Foata normal form. 18/151 useless extension candidates. Maximal degree in co-relation 453. Up to 59 conditions per place. [2023-08-30 05:42:51,710 INFO L137 encePairwiseOnDemand]: 228/233 looper letters, 32 selfloop transitions, 11 changer transitions 4/47 dead transitions. [2023-08-30 05:42:51,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 306 flow [2023-08-30 05:42:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:42:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:42:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2023-08-30 05:42:51,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413447782546495 [2023-08-30 05:42:51,713 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2023-08-30 05:42:51,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2023-08-30 05:42:51,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:51,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2023-08-30 05:42:51,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 05:42:51,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states 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 05:42:51,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 233.0) internal successors, (1631), 7 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states 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 05:42:51,717 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 106 flow. Second operand 6 states and 578 transitions. [2023-08-30 05:42:51,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 306 flow [2023-08-30 05:42:51,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:42:51,724 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 189 flow [2023-08-30 05:42:51,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-30 05:42:51,726 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-30 05:42:51,727 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 189 flow [2023-08-30 05:42:51,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 05:42:51,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:51,727 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:51,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 05:42:51,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:42:51,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:51,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1632126019, now seen corresponding path program 1 times [2023-08-30 05:42:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204920086] [2023-08-30 05:42:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:42:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204920086] [2023-08-30 05:42:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204920086] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:52,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:52,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:42:52,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414600517] [2023-08-30 05:42:52,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:52,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:42:52,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:42:52,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:42:52,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 233 [2023-08-30 05:42:52,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:52,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:52,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 233 [2023-08-30 05:42:52,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:52,216 INFO L130 PetriNetUnfolder]: 78/160 cut-off events. [2023-08-30 05:42:52,216 INFO L131 PetriNetUnfolder]: For 522/522 co-relation queries the response was YES. [2023-08-30 05:42:52,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 160 events. 78/160 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 514 event pairs, 10 based on Foata normal form. 12/172 useless extension candidates. Maximal degree in co-relation 689. Up to 80 conditions per place. [2023-08-30 05:42:52,219 INFO L137 encePairwiseOnDemand]: 228/233 looper letters, 38 selfloop transitions, 8 changer transitions 4/50 dead transitions. [2023-08-30 05:42:52,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 424 flow [2023-08-30 05:42:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:42:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:42:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2023-08-30 05:42:52,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257510729613734 [2023-08-30 05:42:52,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2023-08-30 05:42:52,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2023-08-30 05:42:52,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:52,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2023-08-30 05:42:52,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 05:42:52,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states 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 05:42:52,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states 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 05:42:52,225 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 189 flow. Second operand 5 states and 496 transitions. [2023-08-30 05:42:52,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 424 flow [2023-08-30 05:42:52,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 375 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-30 05:42:52,231 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 240 flow [2023-08-30 05:42:52,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-30 05:42:52,232 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-08-30 05:42:52,232 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 240 flow [2023-08-30 05:42:52,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:42:52,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:52,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:52,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:42:52,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:52,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:52,234 INFO L85 PathProgramCache]: Analyzing trace with hash 851407313, now seen corresponding path program 2 times [2023-08-30 05:42:52,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:52,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309243272] [2023-08-30 05:42:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:52,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:52,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:52,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309243272] [2023-08-30 05:42:52,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309243272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:42:52,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:42:52,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:42:52,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136422459] [2023-08-30 05:42:52,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:42:52,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:42:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:42:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:42:52,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 233 [2023-08-30 05:42:52,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 05:42:52,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:52,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 233 [2023-08-30 05:42:52,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:52,507 INFO L130 PetriNetUnfolder]: 67/132 cut-off events. [2023-08-30 05:42:52,508 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-30 05:42:52,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 132 events. 67/132 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 344 event pairs, 10 based on Foata normal form. 4/136 useless extension candidates. Maximal degree in co-relation 598. Up to 117 conditions per place. [2023-08-30 05:42:52,509 INFO L137 encePairwiseOnDemand]: 229/233 looper letters, 29 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-08-30 05:42:52,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 319 flow [2023-08-30 05:42:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:42:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:42:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-30 05:42:52,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366952789699571 [2023-08-30 05:42:52,511 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-30 05:42:52,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-30 05:42:52,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:52,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-30 05:42:52,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 05:42:52,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 233.0) internal successors, (1165), 5 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states 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 05:42:52,514 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 233.0) internal successors, (1165), 5 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states 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 05:42:52,515 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 240 flow. Second operand 4 states and 407 transitions. [2023-08-30 05:42:52,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 319 flow [2023-08-30 05:42:52,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 311 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 05:42:52,518 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 239 flow [2023-08-30 05:42:52,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-08-30 05:42:52,519 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-08-30 05:42:52,519 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 239 flow [2023-08-30 05:42:52,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 05:42:52,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:52,519 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:52,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:42:52,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:52,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1443212748, now seen corresponding path program 1 times [2023-08-30 05:42:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:52,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263072384] [2023-08-30 05:42:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:52,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:52,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:42:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263072384] [2023-08-30 05:42:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263072384] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:42:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586318514] [2023-08-30 05:42:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:52,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:42:52,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:42:52,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:42:52,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 05:42:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:52,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:42:52,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:42:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:42:52,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:42:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:42:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586318514] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:42:53,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:42:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 05:42:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680292567] [2023-08-30 05:42:53,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:42:53,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:42:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:42:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:42:53,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 233 [2023-08-30 05:42:53,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 05:42:53,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:53,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 233 [2023-08-30 05:42:53,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:53,377 INFO L130 PetriNetUnfolder]: 155/302 cut-off events. [2023-08-30 05:42:53,377 INFO L131 PetriNetUnfolder]: For 1103/1103 co-relation queries the response was YES. [2023-08-30 05:42:53,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 302 events. 155/302 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1098 event pairs, 20 based on Foata normal form. 28/330 useless extension candidates. Maximal degree in co-relation 1432. Up to 127 conditions per place. [2023-08-30 05:42:53,380 INFO L137 encePairwiseOnDemand]: 229/233 looper letters, 63 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2023-08-30 05:42:53,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 78 transitions, 728 flow [2023-08-30 05:42:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:42:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:42:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2023-08-30 05:42:53,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42366646229307175 [2023-08-30 05:42:53,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2023-08-30 05:42:53,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2023-08-30 05:42:53,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:53,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2023-08-30 05:42:53,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 05:42:53,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states 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 05:42:53,388 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 233.0) internal successors, (1864), 8 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states 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 05:42:53,388 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 239 flow. Second operand 7 states and 691 transitions. [2023-08-30 05:42:53,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 78 transitions, 728 flow [2023-08-30 05:42:53,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 687 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-30 05:42:53,393 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 355 flow [2023-08-30 05:42:53,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-30 05:42:53,394 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-30 05:42:53,394 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 355 flow [2023-08-30 05:42:53,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 05:42:53,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:53,395 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:53,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:42:53,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 05:42:53,602 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:53,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 206269085, now seen corresponding path program 2 times [2023-08-30 05:42:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420262944] [2023-08-30 05:42:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:53,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 05:42:54,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:54,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420262944] [2023-08-30 05:42:54,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420262944] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:42:54,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130592103] [2023-08-30 05:42:54,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:42:54,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:42:54,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:42:54,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:42:54,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 05:42:54,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:42:54,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:42:54,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:42:54,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:42:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:55,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:42:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:55,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130592103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:42:55,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:42:55,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-08-30 05:42:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935494860] [2023-08-30 05:42:55,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:42:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:42:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:42:55,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:42:56,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 233 [2023-08-30 05:42:56,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 355 flow. Second operand has 13 states, 13 states have (on average 84.6923076923077) internal successors, (1101), 13 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states 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 05:42:56,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:42:56,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 233 [2023-08-30 05:42:56,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:42:56,977 INFO L130 PetriNetUnfolder]: 311/626 cut-off events. [2023-08-30 05:42:56,978 INFO L131 PetriNetUnfolder]: For 2918/2918 co-relation queries the response was YES. [2023-08-30 05:42:56,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 626 events. 311/626 cut-off events. For 2918/2918 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3061 event pairs, 4 based on Foata normal form. 6/632 useless extension candidates. Maximal degree in co-relation 3136. Up to 261 conditions per place. [2023-08-30 05:42:56,990 INFO L137 encePairwiseOnDemand]: 227/233 looper letters, 76 selfloop transitions, 66 changer transitions 3/145 dead transitions. [2023-08-30 05:42:56,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 145 transitions, 1483 flow [2023-08-30 05:42:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:42:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:42:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1324 transitions. [2023-08-30 05:42:56,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37882689556509297 [2023-08-30 05:42:56,996 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1324 transitions. [2023-08-30 05:42:56,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1324 transitions. [2023-08-30 05:42:56,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:42:56,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1324 transitions. [2023-08-30 05:42:56,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.26666666666667) internal successors, (1324), 15 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states 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 05:42:57,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 233.0) internal successors, (3728), 16 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states 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 05:42:57,004 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 233.0) internal successors, (3728), 16 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states 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 05:42:57,004 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 355 flow. Second operand 15 states and 1324 transitions. [2023-08-30 05:42:57,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 145 transitions, 1483 flow [2023-08-30 05:42:57,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 145 transitions, 1404 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-08-30 05:42:57,015 INFO L231 Difference]: Finished difference. Result has 68 places, 93 transitions, 1188 flow [2023-08-30 05:42:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1188, PETRI_PLACES=68, PETRI_TRANSITIONS=93} [2023-08-30 05:42:57,017 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 41 predicate places. [2023-08-30 05:42:57,017 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 93 transitions, 1188 flow [2023-08-30 05:42:57,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 84.6923076923077) internal successors, (1101), 13 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states 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 05:42:57,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:42:57,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:42:57,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 05:42:57,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:42:57,224 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:42:57,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:42:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1028163609, now seen corresponding path program 3 times [2023-08-30 05:42:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:42:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967628850] [2023-08-30 05:42:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:42:57,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:42:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:42:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:42:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:42:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967628850] [2023-08-30 05:42:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967628850] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:42:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703356650] [2023-08-30 05:42:58,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:42:58,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:42:58,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:42:58,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:42:58,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 05:42:58,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:42:58,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:42:58,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:42:58,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:42:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:58,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:42:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:42:59,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703356650] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:42:59,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:42:59,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-08-30 05:42:59,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818180246] [2023-08-30 05:42:59,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:42:59,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:42:59,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:42:59,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:42:59,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:43:00,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 233 [2023-08-30 05:43:00,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 93 transitions, 1188 flow. Second operand has 14 states, 14 states have (on average 86.35714285714286) internal successors, (1209), 14 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 05:43:00,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:00,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 233 [2023-08-30 05:43:00,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:01,961 INFO L130 PetriNetUnfolder]: 454/931 cut-off events. [2023-08-30 05:43:01,962 INFO L131 PetriNetUnfolder]: For 6532/6532 co-relation queries the response was YES. [2023-08-30 05:43:01,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 931 events. 454/931 cut-off events. For 6532/6532 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5088 event pairs, 26 based on Foata normal form. 6/937 useless extension candidates. Maximal degree in co-relation 5455. Up to 383 conditions per place. [2023-08-30 05:43:01,970 INFO L137 encePairwiseOnDemand]: 227/233 looper letters, 59 selfloop transitions, 130 changer transitions 5/194 dead transitions. [2023-08-30 05:43:01,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 194 transitions, 2523 flow [2023-08-30 05:43:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 05:43:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 05:43:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1606 transitions. [2023-08-30 05:43:01,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829279923700525 [2023-08-30 05:43:01,977 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1606 transitions. [2023-08-30 05:43:01,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1606 transitions. [2023-08-30 05:43:01,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:01,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1606 transitions. [2023-08-30 05:43:01,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 89.22222222222223) internal successors, (1606), 18 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states 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 05:43:01,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 233.0) internal successors, (4427), 19 states have internal predecessors, (4427), 0 states have call successors, (0), 0 states 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 05:43:01,988 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 233.0) internal successors, (4427), 19 states have internal predecessors, (4427), 0 states have call successors, (0), 0 states 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 05:43:01,988 INFO L175 Difference]: Start difference. First operand has 68 places, 93 transitions, 1188 flow. Second operand 18 states and 1606 transitions. [2023-08-30 05:43:01,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 194 transitions, 2523 flow [2023-08-30 05:43:02,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 194 transitions, 2224 flow, removed 148 selfloop flow, removed 1 redundant places. [2023-08-30 05:43:02,018 INFO L231 Difference]: Finished difference. Result has 89 places, 143 transitions, 1990 flow [2023-08-30 05:43:02,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1990, PETRI_PLACES=89, PETRI_TRANSITIONS=143} [2023-08-30 05:43:02,019 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 62 predicate places. [2023-08-30 05:43:02,019 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 143 transitions, 1990 flow [2023-08-30 05:43:02,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 86.35714285714286) internal successors, (1209), 14 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 05:43:02,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:02,020 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:02,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:43:02,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:02,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:43:02,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2066228280, now seen corresponding path program 4 times [2023-08-30 05:43:02,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:02,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636006115] [2023-08-30 05:43:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:02,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:02,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636006115] [2023-08-30 05:43:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636006115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:43:02,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278627444] [2023-08-30 05:43:02,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:43:02,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:02,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:43:02,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:43:02,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 05:43:02,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:43:02,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:43:02,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:43:02,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:43:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:43:02,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:43:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:43:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278627444] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:43:03,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:43:03,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-30 05:43:03,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709980196] [2023-08-30 05:43:03,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:43:03,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:43:03,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:43:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:43:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:43:03,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 233 [2023-08-30 05:43:03,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 143 transitions, 1990 flow. Second operand has 18 states, 18 states have (on average 91.44444444444444) internal successors, (1646), 18 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states 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 05:43:03,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:43:03,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 233 [2023-08-30 05:43:03,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:43:17,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 05:43:20,537 INFO L130 PetriNetUnfolder]: 1798/3455 cut-off events. [2023-08-30 05:43:20,537 INFO L131 PetriNetUnfolder]: For 29041/29041 co-relation queries the response was YES. [2023-08-30 05:43:20,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21395 conditions, 3455 events. 1798/3455 cut-off events. For 29041/29041 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 22378 event pairs, 12 based on Foata normal form. 728/4183 useless extension candidates. Maximal degree in co-relation 21365. Up to 1047 conditions per place. [2023-08-30 05:43:20,575 INFO L137 encePairwiseOnDemand]: 228/233 looper letters, 444 selfloop transitions, 352 changer transitions 82/878 dead transitions. [2023-08-30 05:43:20,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 878 transitions, 12902 flow [2023-08-30 05:43:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-08-30 05:43:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-08-30 05:43:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 5877 transitions. [2023-08-30 05:43:20,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068254188010522 [2023-08-30 05:43:20,588 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 5877 transitions. [2023-08-30 05:43:20,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 5877 transitions. [2023-08-30 05:43:20,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:43:20,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 5877 transitions. [2023-08-30 05:43:20,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 94.79032258064517) internal successors, (5877), 62 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states 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 05:43:20,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 233.0) internal successors, (14679), 63 states have internal predecessors, (14679), 0 states have call successors, (0), 0 states 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 05:43:20,638 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 233.0) internal successors, (14679), 63 states have internal predecessors, (14679), 0 states have call successors, (0), 0 states 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 05:43:20,639 INFO L175 Difference]: Start difference. First operand has 89 places, 143 transitions, 1990 flow. Second operand 62 states and 5877 transitions. [2023-08-30 05:43:20,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 878 transitions, 12902 flow [2023-08-30 05:43:20,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 878 transitions, 10185 flow, removed 1218 selfloop flow, removed 7 redundant places. [2023-08-30 05:43:20,821 INFO L231 Difference]: Finished difference. Result has 173 places, 456 transitions, 6064 flow [2023-08-30 05:43:20,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=6064, PETRI_PLACES=173, PETRI_TRANSITIONS=456} [2023-08-30 05:43:20,822 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 146 predicate places. [2023-08-30 05:43:20,823 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 456 transitions, 6064 flow [2023-08-30 05:43:20,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.44444444444444) internal successors, (1646), 18 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states 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 05:43:20,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:43:20,824 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:43:20,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 05:43:21,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 05:43:21,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:43:21,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:43:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash -639435342, now seen corresponding path program 5 times [2023-08-30 05:43:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:43:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330624173] [2023-08-30 05:43:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:43:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:43:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:43:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:21,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:43:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330624173] [2023-08-30 05:43:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330624173] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:43:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889620218] [2023-08-30 05:43:21,631 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:43:21,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:43:21,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:43:21,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:43:21,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 05:43:21,841 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 05:43:21,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:43:21,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:43:21,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:43:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:43:23,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:59,207 WARN L222 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 3031 DAG size of output: 3023 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15