./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp2x9.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/bench-exp2x9.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 d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --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 04:42:49,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:42:49,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:42:49,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:42:49,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:42:49,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:42:49,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:42:49,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:42:49,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:42:49,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:42:49,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:42:49,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:42:49,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:42:49,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:42:49,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:42:49,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:42:49,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:42:49,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:42:49,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:42:49,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:42:49,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:42:49,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:42:49,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:42:49,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:42:49,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:42:49,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:42:49,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:42:49,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:42:49,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:42:49,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:42:49,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:42:49,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:42:49,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:42:49,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:42:49,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:42:49,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:42:49,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:42:49,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:42:49,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:42:49,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:42:49,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:42:49,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:42:49,926 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:42:49,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:42:49,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:42:49,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:42:49,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:42:49,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:42:49,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:42:49,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:42:49,929 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:42:49,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:42:49,930 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:42:49,930 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:42:49,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:42:49,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:42:49,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:42:49,931 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:42:49,931 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:42:49,932 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:42:49,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:42:49,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:42:49,932 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:42:49,933 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:42:49,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:42:49,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:42:49,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:42:49,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:42:49,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:42:49,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:42:49,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:42:49,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:42:49,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:42:49,935 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:42:49,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:42:49,936 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:42:49,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:42:50,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:42:50,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:42:50,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:42:50,222 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:42:50,222 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:42:50,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2023-08-30 04:42:51,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:42:51,547 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:42:51,548 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2023-08-30 04:42:51,559 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dca808fd/d2e1727aaf82408ca842ff6fa0283b1f/FLAGaf5d490ce [2023-08-30 04:42:51,578 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dca808fd/d2e1727aaf82408ca842ff6fa0283b1f [2023-08-30 04:42:51,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:42:51,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:42:51,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:42:51,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:42:51,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:42:51,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cf602a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51, skipping insertion in model container [2023-08-30 04:42:51,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:42:51,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:42:51,807 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/bench-exp2x9.wvr.c[2669,2682] [2023-08-30 04:42:51,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:42:51,826 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:42:51,863 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/bench-exp2x9.wvr.c[2669,2682] [2023-08-30 04:42:51,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:42:51,884 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:42:51,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51 WrapperNode [2023-08-30 04:42:51,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:42:51,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:42:51,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:42:51,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:42:51,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,936 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-08-30 04:42:51,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:42:51,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:42:51,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:42:51,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:42:51,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:42:51,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:42:51,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:42:51,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:42:51,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (1/1) ... [2023-08-30 04:42:51,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:42:51,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:42:52,002 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 04:42:52,010 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 04:42:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:42:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 04:42:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 04:42:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 04:42:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 04:42:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 04:42:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 04:42:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 04:42:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 04:42:52,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:42:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:42:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:42:52,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:42:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:42:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 04:42:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:42:52,045 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 04:42:52,128 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:42:52,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:42:52,498 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:42:52,505 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:42:52,505 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 04:42:52,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:42:52 BoogieIcfgContainer [2023-08-30 04:42:52,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:42:52,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:42:52,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:42:52,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:42:52,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:42:51" (1/3) ... [2023-08-30 04:42:52,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f36c55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:42:52, skipping insertion in model container [2023-08-30 04:42:52,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:42:51" (2/3) ... [2023-08-30 04:42:52,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f36c55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:42:52, skipping insertion in model container [2023-08-30 04:42:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:42:52" (3/3) ... [2023-08-30 04:42:52,519 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2023-08-30 04:42:52,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:42:52,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 04:42:52,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:42:52,629 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 04:42:52,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 167 transitions, 366 flow [2023-08-30 04:42:52,734 INFO L130 PetriNetUnfolder]: 10/163 cut-off events. [2023-08-30 04:42:52,735 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 04:42:52,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 163 events. 10/163 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 193 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-30 04:42:52,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 167 transitions, 366 flow [2023-08-30 04:42:52,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 159 transitions, 342 flow [2023-08-30 04:42:52,756 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:42:52,768 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 159 transitions, 342 flow [2023-08-30 04:42:52,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 159 transitions, 342 flow [2023-08-30 04:42:52,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 342 flow [2023-08-30 04:42:52,820 INFO L130 PetriNetUnfolder]: 10/159 cut-off events. [2023-08-30 04:42:52,824 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 04:42:52,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 159 events. 10/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2023-08-30 04:42:52,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 4080 [2023-08-30 04:42:57,678 INFO L134 LiptonReduction]: Checked pairs total: 3972 [2023-08-30 04:42:57,679 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-30 04:42:57,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:42:57,700 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;@24ae82e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:42:57,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 04:42:57,702 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:42:57,702 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:57,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:57,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:42:57,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:57,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:57,706 INFO L85 PathProgramCache]: Analyzing trace with hash 616, now seen corresponding path program 1 times [2023-08-30 04:42:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282594896] [2023-08-30 04:42:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:57,785 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 04:42:57,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282594896] [2023-08-30 04:42:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282594896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:57,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:42:57,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566126163] [2023-08-30 04:42:57,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:57,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:42:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:42:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:42:57,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 325 [2023-08-30 04:42:57,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 04:42:57,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:57,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 325 [2023-08-30 04:42:57,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:57,942 INFO L130 PetriNetUnfolder]: 513/692 cut-off events. [2023-08-30 04:42:57,942 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 04:42:57,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 692 events. 513/692 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1645 event pairs, 249 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 1020. Up to 693 conditions per place. [2023-08-30 04:42:57,948 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 39 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-08-30 04:42:57,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 180 flow [2023-08-30 04:42:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:42:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:42:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 346 transitions. [2023-08-30 04:42:57,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323076923076923 [2023-08-30 04:42:57,961 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 346 transitions. [2023-08-30 04:42:57,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 346 transitions. [2023-08-30 04:42:57,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:57,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 346 transitions. [2023-08-30 04:42:57,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 04:42:57,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 04:42:57,973 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 04:42:57,974 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 108 flow. Second operand 2 states and 346 transitions. [2023-08-30 04:42:57,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 180 flow [2023-08-30 04:42:57,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 04:42:57,980 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 86 flow [2023-08-30 04:42:57,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 04:42:57,984 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2023-08-30 04:42:57,984 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 86 flow [2023-08-30 04:42:57,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 04:42:57,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:57,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:42:57,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:42:57,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:57,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash 604619, now seen corresponding path program 1 times [2023-08-30 04:42:57,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:57,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927185788] [2023-08-30 04:42:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:58,400 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 04:42:58,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:58,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927185788] [2023-08-30 04:42:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927185788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:58,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:58,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:42:58,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176140688] [2023-08-30 04:42:58,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:58,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:58,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:58,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 325 [2023-08-30 04:42:58,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states 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 04:42:58,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:58,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 325 [2023-08-30 04:42:58,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:58,556 INFO L130 PetriNetUnfolder]: 487/656 cut-off events. [2023-08-30 04:42:58,556 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:58,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 656 events. 487/656 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1534 event pairs, 236 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 1327. Up to 656 conditions per place. [2023-08-30 04:42:58,562 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 04:42:58,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 156 flow [2023-08-30 04:42:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-30 04:42:58,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47384615384615386 [2023-08-30 04:42:58,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-30 04:42:58,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-30 04:42:58,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:58,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-30 04:42:58,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 04:42:58,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:58,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:58,598 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 86 flow. Second operand 3 states and 462 transitions. [2023-08-30 04:42:58,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 156 flow [2023-08-30 04:42:58,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 156 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:42:58,599 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 84 flow [2023-08-30 04:42:58,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-30 04:42:58,600 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2023-08-30 04:42:58,600 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 84 flow [2023-08-30 04:42:58,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states 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 04:42:58,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:58,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:42:58,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:42:58,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:58,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 604621, now seen corresponding path program 1 times [2023-08-30 04:42:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:58,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827361946] [2023-08-30 04:42:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:58,751 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 04:42:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827361946] [2023-08-30 04:42:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827361946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:58,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:58,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:42:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839675529] [2023-08-30 04:42:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:58,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:58,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 04:42:58,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:58,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:58,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 04:42:58,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:58,881 INFO L130 PetriNetUnfolder]: 461/620 cut-off events. [2023-08-30 04:42:58,881 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:58,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 620 events. 461/620 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1425 event pairs, 223 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 1256. Up to 620 conditions per place. [2023-08-30 04:42:58,884 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 04:42:58,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 150 flow [2023-08-30 04:42:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-30 04:42:58,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49025641025641026 [2023-08-30 04:42:58,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-30 04:42:58,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-30 04:42:58,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:58,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-30 04:42:58,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 04:42:58,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:58,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:58,891 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 84 flow. Second operand 3 states and 478 transitions. [2023-08-30 04:42:58,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 150 flow [2023-08-30 04:42:58,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:42:58,893 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 81 flow [2023-08-30 04:42:58,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-08-30 04:42:58,894 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -11 predicate places. [2023-08-30 04:42:58,894 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 81 flow [2023-08-30 04:42:58,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:58,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:58,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:42:58,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 04:42:58,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:58,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash 581053299, now seen corresponding path program 1 times [2023-08-30 04:42:58,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:58,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261613507] [2023-08-30 04:42:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:58,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:59,052 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 04:42:59,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261613507] [2023-08-30 04:42:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261613507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:59,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:59,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:42:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359920281] [2023-08-30 04:42:59,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:59,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:59,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:59,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 04:42:59,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 04:42:59,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:59,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 04:42:59,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:59,171 INFO L130 PetriNetUnfolder]: 445/596 cut-off events. [2023-08-30 04:42:59,171 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:59,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 596 events. 445/596 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1355 event pairs, 215 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 1209. Up to 596 conditions per place. [2023-08-30 04:42:59,174 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 04:42:59,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 143 flow [2023-08-30 04:42:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-30 04:42:59,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882051282051282 [2023-08-30 04:42:59,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-30 04:42:59,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-30 04:42:59,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:59,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-30 04:42:59,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states 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 04:42:59,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,181 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 81 flow. Second operand 3 states and 476 transitions. [2023-08-30 04:42:59,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 143 flow [2023-08-30 04:42:59,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:42:59,182 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 78 flow [2023-08-30 04:42:59,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-30 04:42:59,183 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -12 predicate places. [2023-08-30 04:42:59,183 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 78 flow [2023-08-30 04:42:59,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 04:42:59,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:59,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:42:59,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 04:42:59,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:59,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash 581053297, now seen corresponding path program 1 times [2023-08-30 04:42:59,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:59,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455169063] [2023-08-30 04:42:59,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:59,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:59,227 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 04:42:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455169063] [2023-08-30 04:42:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455169063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:42:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306491368] [2023-08-30 04:42:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:59,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:59,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 325 [2023-08-30 04:42:59,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 04:42:59,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:59,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 325 [2023-08-30 04:42:59,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:59,329 INFO L130 PetriNetUnfolder]: 429/572 cut-off events. [2023-08-30 04:42:59,329 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 572 events. 429/572 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1285 event pairs, 207 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 1162. Up to 572 conditions per place. [2023-08-30 04:42:59,332 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 30 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-30 04:42:59,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 136 flow [2023-08-30 04:42:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 456 transitions. [2023-08-30 04:42:59,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676923076923077 [2023-08-30 04:42:59,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 456 transitions. [2023-08-30 04:42:59,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 456 transitions. [2023-08-30 04:42:59,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:59,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 456 transitions. [2023-08-30 04:42:59,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states 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 04:42:59,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,338 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 78 flow. Second operand 3 states and 456 transitions. [2023-08-30 04:42:59,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 136 flow [2023-08-30 04:42:59,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:42:59,340 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 75 flow [2023-08-30 04:42:59,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-08-30 04:42:59,341 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -13 predicate places. [2023-08-30 04:42:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 75 flow [2023-08-30 04:42:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 04:42:59,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:59,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:42:59,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 04:42:59,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:59,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 46484572, now seen corresponding path program 1 times [2023-08-30 04:42:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814092205] [2023-08-30 04:42:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:59,378 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 04:42:59,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:59,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814092205] [2023-08-30 04:42:59,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814092205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:59,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:59,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:42:59,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844933140] [2023-08-30 04:42:59,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:59,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:59,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:59,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:59,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:59,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 325 [2023-08-30 04:42:59,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:59,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:59,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 325 [2023-08-30 04:42:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:59,482 INFO L130 PetriNetUnfolder]: 403/536 cut-off events. [2023-08-30 04:42:59,483 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:59,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 536 events. 403/536 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1176 event pairs, 194 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 1091. Up to 536 conditions per place. [2023-08-30 04:42:59,486 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 04:42:59,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 129 flow [2023-08-30 04:42:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-30 04:42:59,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46564102564102566 [2023-08-30 04:42:59,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-30 04:42:59,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-30 04:42:59,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:59,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-30 04:42:59,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 04:42:59,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,492 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 75 flow. Second operand 3 states and 454 transitions. [2023-08-30 04:42:59,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 129 flow [2023-08-30 04:42:59,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:42:59,494 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 72 flow [2023-08-30 04:42:59,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-30 04:42:59,494 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -14 predicate places. [2023-08-30 04:42:59,495 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 72 flow [2023-08-30 04:42:59,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:59,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:59,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:42:59,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 04:42:59,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:59,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:59,496 INFO L85 PathProgramCache]: Analyzing trace with hash 46484571, now seen corresponding path program 1 times [2023-08-30 04:42:59,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:59,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749982473] [2023-08-30 04:42:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:59,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:59,551 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 04:42:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:59,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749982473] [2023-08-30 04:42:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749982473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:59,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:59,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:42:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145516643] [2023-08-30 04:42:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:59,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 325 [2023-08-30 04:42:59,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:59,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:59,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 325 [2023-08-30 04:42:59,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:59,659 INFO L130 PetriNetUnfolder]: 377/500 cut-off events. [2023-08-30 04:42:59,659 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:59,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 500 events. 377/500 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1074 event pairs, 181 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 1020. Up to 500 conditions per place. [2023-08-30 04:42:59,662 INFO L137 encePairwiseOnDemand]: 322/325 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 04:42:59,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 122 flow [2023-08-30 04:42:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-30 04:42:59,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2023-08-30 04:42:59,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-30 04:42:59,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-30 04:42:59,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:59,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-30 04:42:59,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states 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 04:42:59,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,668 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 72 flow. Second operand 3 states and 470 transitions. [2023-08-30 04:42:59,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 122 flow [2023-08-30 04:42:59,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:42:59,669 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 69 flow [2023-08-30 04:42:59,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-30 04:42:59,670 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -15 predicate places. [2023-08-30 04:42:59,670 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 69 flow [2023-08-30 04:42:59,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:42:59,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:59,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:42:59,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 04:42:59,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:59,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1722015191, now seen corresponding path program 1 times [2023-08-30 04:42:59,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364104317] [2023-08-30 04:42:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:59,725 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 04:42:59,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:59,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364104317] [2023-08-30 04:42:59,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364104317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:59,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:59,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:42:59,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836902789] [2023-08-30 04:42:59,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:59,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:42:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:59,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:42:59,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:42:59,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 325 [2023-08-30 04:42:59,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 04:42:59,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:42:59,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 325 [2023-08-30 04:42:59,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:42:59,814 INFO L130 PetriNetUnfolder]: 313/420 cut-off events. [2023-08-30 04:42:59,814 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:42:59,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 420 events. 313/420 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 852 event pairs, 149 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 861. Up to 420 conditions per place. [2023-08-30 04:42:59,817 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 04:42:59,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 119 flow [2023-08-30 04:42:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:42:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:42:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-30 04:42:59,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2023-08-30 04:42:59,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-30 04:42:59,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-30 04:42:59,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:42:59,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-30 04:42:59,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 04:42:59,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:42:59,822 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 69 flow. Second operand 3 states and 453 transitions. [2023-08-30 04:42:59,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 119 flow [2023-08-30 04:42:59,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:42:59,824 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 68 flow [2023-08-30 04:42:59,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 04:42:59,827 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -15 predicate places. [2023-08-30 04:42:59,827 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 68 flow [2023-08-30 04:42:59,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 04:42:59,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:42:59,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:42:59,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 04:42:59,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:42:59,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:42:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1722015190, now seen corresponding path program 1 times [2023-08-30 04:42:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:42:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911082324] [2023-08-30 04:42:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:42:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:42:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:42:59,980 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 04:42:59,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:42:59,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911082324] [2023-08-30 04:42:59,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911082324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:42:59,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:42:59,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:42:59,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158098050] [2023-08-30 04:42:59,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:42:59,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:42:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:42:59,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:42:59,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:43:00,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 325 [2023-08-30 04:43:00,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 04:43:00,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:00,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 325 [2023-08-30 04:43:00,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:00,162 INFO L130 PetriNetUnfolder]: 249/340 cut-off events. [2023-08-30 04:43:00,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:43:00,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 340 events. 249/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 641 event pairs, 117 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 702. Up to 340 conditions per place. [2023-08-30 04:43:00,164 INFO L137 encePairwiseOnDemand]: 323/325 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-30 04:43:00,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 116 flow [2023-08-30 04:43:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-08-30 04:43:00,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235897435897436 [2023-08-30 04:43:00,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-08-30 04:43:00,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-08-30 04:43:00,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:00,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-08-30 04:43:00,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 04:43:00,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:43:00,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:43:00,170 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 68 flow. Second operand 3 states and 413 transitions. [2023-08-30 04:43:00,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 116 flow [2023-08-30 04:43:00,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:00,171 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 67 flow [2023-08-30 04:43:00,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-30 04:43:00,172 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -15 predicate places. [2023-08-30 04:43:00,172 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 67 flow [2023-08-30 04:43:00,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 04:43:00,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:00,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:00,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 04:43:00,173 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:00,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash 338698627, now seen corresponding path program 1 times [2023-08-30 04:43:00,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:00,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327766601] [2023-08-30 04:43:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:00,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:00,416 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 04:43:00,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:00,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327766601] [2023-08-30 04:43:00,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327766601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:00,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:00,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:43:00,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982698757] [2023-08-30 04:43:00,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:00,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:43:00,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:43:00,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:43:00,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 325 [2023-08-30 04:43:00,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 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 04:43:00,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:00,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 325 [2023-08-30 04:43:00,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:00,612 INFO L130 PetriNetUnfolder]: 497/677 cut-off events. [2023-08-30 04:43:00,613 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 04:43:00,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 677 events. 497/677 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1780 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1391. Up to 471 conditions per place. [2023-08-30 04:43:00,617 INFO L137 encePairwiseOnDemand]: 319/325 looper letters, 41 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-08-30 04:43:00,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 212 flow [2023-08-30 04:43:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:43:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:43:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-08-30 04:43:00,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40615384615384614 [2023-08-30 04:43:00,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-08-30 04:43:00,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-08-30 04:43:00,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:00,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-08-30 04:43:00,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 04:43:00,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:43:00,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states 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 04:43:00,622 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 67 flow. Second operand 3 states and 396 transitions. [2023-08-30 04:43:00,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 212 flow [2023-08-30 04:43:00,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:00,624 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 99 flow [2023-08-30 04:43:00,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-30 04:43:00,625 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -13 predicate places. [2023-08-30 04:43:00,625 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 99 flow [2023-08-30 04:43:00,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 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 04:43:00,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:00,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:00,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 04:43:00,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:00,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1857867788, now seen corresponding path program 1 times [2023-08-30 04:43:00,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:00,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192556407] [2023-08-30 04:43:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:00,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:00,785 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 04:43:00,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:00,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192556407] [2023-08-30 04:43:00,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192556407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:00,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:00,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:00,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776822206] [2023-08-30 04:43:00,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:00,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:00,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:00,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 325 [2023-08-30 04:43:00,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 04:43:00,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:00,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 325 [2023-08-30 04:43:00,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:00,998 INFO L130 PetriNetUnfolder]: 693/951 cut-off events. [2023-08-30 04:43:00,998 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2023-08-30 04:43:01,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 951 events. 693/951 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2820 event pairs, 67 based on Foata normal form. 32/983 useless extension candidates. Maximal degree in co-relation 2420. Up to 371 conditions per place. [2023-08-30 04:43:01,004 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 68 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2023-08-30 04:43:01,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 78 transitions, 395 flow [2023-08-30 04:43:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:43:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:43:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 712 transitions. [2023-08-30 04:43:01,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43815384615384617 [2023-08-30 04:43:01,007 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 712 transitions. [2023-08-30 04:43:01,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 712 transitions. [2023-08-30 04:43:01,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:01,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 712 transitions. [2023-08-30 04:43:01,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 04:43:01,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states 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 04:43:01,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states 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 04:43:01,013 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 99 flow. Second operand 5 states and 712 transitions. [2023-08-30 04:43:01,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 78 transitions, 395 flow [2023-08-30 04:43:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 78 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:01,016 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 159 flow [2023-08-30 04:43:01,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-30 04:43:01,017 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2023-08-30 04:43:01,017 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 159 flow [2023-08-30 04:43:01,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states 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 04:43:01,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:01,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 04:43:01,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:01,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1983965395, now seen corresponding path program 1 times [2023-08-30 04:43:01,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:01,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694968473] [2023-08-30 04:43:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:01,184 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 04:43:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694968473] [2023-08-30 04:43:01,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694968473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:43:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54054157] [2023-08-30 04:43:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:01,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:01,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:01,193 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 04:43:01,217 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 04:43:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:01,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:43:01,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:43:01,568 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 04:43:01,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:43:01,647 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 04:43:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54054157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:43:01,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:43:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 04:43:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723200249] [2023-08-30 04:43:01,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:43:01,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 04:43:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 04:43:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 04:43:01,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 325 [2023-08-30 04:43:01,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 04:43:01,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:01,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 325 [2023-08-30 04:43:01,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:02,276 INFO L130 PetriNetUnfolder]: 1309/1809 cut-off events. [2023-08-30 04:43:02,277 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-30 04:43:02,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5617 conditions, 1809 events. 1309/1809 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6452 event pairs, 179 based on Foata normal form. 68/1877 useless extension candidates. Maximal degree in co-relation 5610. Up to 757 conditions per place. [2023-08-30 04:43:02,287 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 105 selfloop transitions, 11 changer transitions 3/119 dead transitions. [2023-08-30 04:43:02,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 119 transitions, 708 flow [2023-08-30 04:43:02,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:43:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:43:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 760 transitions. [2023-08-30 04:43:02,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38974358974358975 [2023-08-30 04:43:02,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 760 transitions. [2023-08-30 04:43:02,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 760 transitions. [2023-08-30 04:43:02,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:02,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 760 transitions. [2023-08-30 04:43:02,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 04:43:02,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states 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 04:43:02,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states 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 04:43:02,296 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 159 flow. Second operand 6 states and 760 transitions. [2023-08-30 04:43:02,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 119 transitions, 708 flow [2023-08-30 04:43:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 119 transitions, 708 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:43:02,301 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 220 flow [2023-08-30 04:43:02,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-08-30 04:43:02,302 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-30 04:43:02,302 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 220 flow [2023-08-30 04:43:02,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states 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 04:43:02,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:02,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:02,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 04:43:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 04:43:02,509 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:02,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash 922617435, now seen corresponding path program 1 times [2023-08-30 04:43:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807919057] [2023-08-30 04:43:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:02,734 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 04:43:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:02,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807919057] [2023-08-30 04:43:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807919057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:02,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:02,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340971232] [2023-08-30 04:43:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:02,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:02,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:02,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:02,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 325 [2023-08-30 04:43:02,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 04:43:02,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:02,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 325 [2023-08-30 04:43:02,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:03,063 INFO L130 PetriNetUnfolder]: 1187/1637 cut-off events. [2023-08-30 04:43:03,063 INFO L131 PetriNetUnfolder]: For 3146/3146 co-relation queries the response was YES. [2023-08-30 04:43:03,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6025 conditions, 1637 events. 1187/1637 cut-off events. For 3146/3146 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5711 event pairs, 177 based on Foata normal form. 36/1673 useless extension candidates. Maximal degree in co-relation 6014. Up to 1431 conditions per place. [2023-08-30 04:43:03,075 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 60 selfloop transitions, 11 changer transitions 6/77 dead transitions. [2023-08-30 04:43:03,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 516 flow [2023-08-30 04:43:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:43:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:43:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2023-08-30 04:43:03,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861538461538462 [2023-08-30 04:43:03,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2023-08-30 04:43:03,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2023-08-30 04:43:03,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:03,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2023-08-30 04:43:03,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:43:03,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states 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 04:43:03,081 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states 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 04:43:03,081 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 220 flow. Second operand 4 states and 502 transitions. [2023-08-30 04:43:03,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 516 flow [2023-08-30 04:43:03,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 507 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:03,090 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 285 flow [2023-08-30 04:43:03,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-08-30 04:43:03,091 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-30 04:43:03,091 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 285 flow [2023-08-30 04:43:03,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 04:43:03,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:03,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:03,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 04:43:03,092 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:03,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1961194123, now seen corresponding path program 1 times [2023-08-30 04:43:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134165934] [2023-08-30 04:43:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:03,232 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 04:43:03,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134165934] [2023-08-30 04:43:03,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134165934] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:43:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140600184] [2023-08-30 04:43:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:03,234 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 04:43:03,236 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 04:43:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:03,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:43:03,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:43:03,435 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 04:43:03,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:43:03,509 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 04:43:03,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140600184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:43:03,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:43:03,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 04:43:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941795064] [2023-08-30 04:43:03,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:43:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:43:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:43:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:43:03,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 325 [2023-08-30 04:43:03,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 04:43:03,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:03,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 325 [2023-08-30 04:43:03,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:03,901 INFO L130 PetriNetUnfolder]: 1613/2249 cut-off events. [2023-08-30 04:43:03,901 INFO L131 PetriNetUnfolder]: For 4966/4966 co-relation queries the response was YES. [2023-08-30 04:43:03,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 2249 events. 1613/2249 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8365 event pairs, 351 based on Foata normal form. 90/2339 useless extension candidates. Maximal degree in co-relation 8781. Up to 936 conditions per place. [2023-08-30 04:43:03,917 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 90 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-08-30 04:43:03,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 103 transitions, 761 flow [2023-08-30 04:43:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:43:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:43:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 714 transitions. [2023-08-30 04:43:03,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393846153846154 [2023-08-30 04:43:03,920 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 714 transitions. [2023-08-30 04:43:03,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 714 transitions. [2023-08-30 04:43:03,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:03,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 714 transitions. [2023-08-30 04:43:03,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 04:43:03,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states 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 04:43:03,925 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states 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 04:43:03,925 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 285 flow. Second operand 5 states and 714 transitions. [2023-08-30 04:43:03,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 103 transitions, 761 flow [2023-08-30 04:43:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 103 transitions, 737 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 04:43:03,932 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 325 flow [2023-08-30 04:43:03,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-30 04:43:03,933 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-30 04:43:03,933 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 325 flow [2023-08-30 04:43:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 04:43:03,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:03,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:03,942 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 04:43:04,139 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,SelfDestructingSolverStorable13 [2023-08-30 04:43:04,140 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:04,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:04,140 INFO L85 PathProgramCache]: Analyzing trace with hash -589359287, now seen corresponding path program 2 times [2023-08-30 04:43:04,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:04,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718559315] [2023-08-30 04:43:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:04,324 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 04:43:04,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:04,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718559315] [2023-08-30 04:43:04,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718559315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:04,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:04,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022806719] [2023-08-30 04:43:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:04,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:04,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:04,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:04,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:04,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 325 [2023-08-30 04:43:04,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 04:43:04,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:04,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 325 [2023-08-30 04:43:04,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:04,697 INFO L130 PetriNetUnfolder]: 1519/2103 cut-off events. [2023-08-30 04:43:04,697 INFO L131 PetriNetUnfolder]: For 5939/5939 co-relation queries the response was YES. [2023-08-30 04:43:04,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8952 conditions, 2103 events. 1519/2103 cut-off events. For 5939/5939 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7657 event pairs, 313 based on Foata normal form. 14/2103 useless extension candidates. Maximal degree in co-relation 8937. Up to 1897 conditions per place. [2023-08-30 04:43:04,714 INFO L137 encePairwiseOnDemand]: 318/325 looper letters, 58 selfloop transitions, 11 changer transitions 11/80 dead transitions. [2023-08-30 04:43:04,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 585 flow [2023-08-30 04:43:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:43:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:43:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 501 transitions. [2023-08-30 04:43:04,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853846153846154 [2023-08-30 04:43:04,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 501 transitions. [2023-08-30 04:43:04,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 501 transitions. [2023-08-30 04:43:04,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:04,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 501 transitions. [2023-08-30 04:43:04,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 04:43:04,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states 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 04:43:04,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states 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 04:43:04,752 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 325 flow. Second operand 4 states and 501 transitions. [2023-08-30 04:43:04,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 585 flow [2023-08-30 04:43:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 573 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:04,766 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 348 flow [2023-08-30 04:43:04,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-08-30 04:43:04,767 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-30 04:43:04,767 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 348 flow [2023-08-30 04:43:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 04:43:04,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:04,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 04:43:04,768 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:04,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -536498310, now seen corresponding path program 2 times [2023-08-30 04:43:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:04,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644270458] [2023-08-30 04:43:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:04,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:04,935 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 04:43:04,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:04,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644270458] [2023-08-30 04:43:04,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644270458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:43:04,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:43:04,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:43:04,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135384807] [2023-08-30 04:43:04,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:43:04,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:43:04,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:43:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:43:05,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 325 [2023-08-30 04:43:05,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 04:43:05,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:05,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 325 [2023-08-30 04:43:05,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:05,350 INFO L130 PetriNetUnfolder]: 1771/2439 cut-off events. [2023-08-30 04:43:05,350 INFO L131 PetriNetUnfolder]: For 6747/6747 co-relation queries the response was YES. [2023-08-30 04:43:05,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10588 conditions, 2439 events. 1771/2439 cut-off events. For 6747/6747 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8934 event pairs, 425 based on Foata normal form. 84/2523 useless extension candidates. Maximal degree in co-relation 10571. Up to 1967 conditions per place. [2023-08-30 04:43:05,366 INFO L137 encePairwiseOnDemand]: 319/325 looper letters, 73 selfloop transitions, 10 changer transitions 3/86 dead transitions. [2023-08-30 04:43:05,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 678 flow [2023-08-30 04:43:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:43:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:43:05,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-08-30 04:43:05,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38769230769230767 [2023-08-30 04:43:05,369 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-08-30 04:43:05,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-08-30 04:43:05,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:05,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-08-30 04:43:05,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 04:43:05,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states 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 04:43:05,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 325.0) internal successors, (1625), 5 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states 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 04:43:05,373 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 348 flow. Second operand 4 states and 504 transitions. [2023-08-30 04:43:05,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 678 flow [2023-08-30 04:43:05,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 669 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:43:05,384 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 374 flow [2023-08-30 04:43:05,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2023-08-30 04:43:05,385 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-30 04:43:05,385 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 374 flow [2023-08-30 04:43:05,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 04:43:05,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:05,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:05,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 04:43:05,386 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:05,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1854870497, now seen corresponding path program 2 times [2023-08-30 04:43:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468056271] [2023-08-30 04:43:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:05,487 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 04:43:05,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468056271] [2023-08-30 04:43:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468056271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:43:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314273756] [2023-08-30 04:43:05,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:43:05,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:05,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:05,489 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 04:43:05,497 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 04:43:05,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 04:43:05,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:43:05,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:43:05,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:43:05,698 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 04:43:05,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:43:05,748 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 04:43:05,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314273756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:43:05,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:43:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 04:43:05,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668446741] [2023-08-30 04:43:05,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:43:05,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:43:05,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:43:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:43:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:43:05,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 325 [2023-08-30 04:43:05,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 133.66666666666666) internal successors, (802), 6 states have internal predecessors, (802), 0 states have call successors, (0), 0 states 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 04:43:05,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:43:05,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 325 [2023-08-30 04:43:05,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:43:06,245 INFO L130 PetriNetUnfolder]: 2241/3081 cut-off events. [2023-08-30 04:43:06,245 INFO L131 PetriNetUnfolder]: For 11106/11106 co-relation queries the response was YES. [2023-08-30 04:43:06,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13927 conditions, 3081 events. 2241/3081 cut-off events. For 11106/11106 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11914 event pairs, 535 based on Foata normal form. 76/3157 useless extension candidates. Maximal degree in co-relation 13909. Up to 1757 conditions per place. [2023-08-30 04:43:06,269 INFO L137 encePairwiseOnDemand]: 320/325 looper letters, 120 selfloop transitions, 10 changer transitions 0/130 dead transitions. [2023-08-30 04:43:06,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 130 transitions, 1079 flow [2023-08-30 04:43:06,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:43:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:43:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-08-30 04:43:06,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443076923076923 [2023-08-30 04:43:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-08-30 04:43:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-08-30 04:43:06,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:43:06,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-08-30 04:43:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 04:43:06,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states 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 04:43:06,277 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states 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 04:43:06,278 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 374 flow. Second operand 5 states and 722 transitions. [2023-08-30 04:43:06,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 130 transitions, 1079 flow [2023-08-30 04:43:06,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 130 transitions, 1051 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 04:43:06,297 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 410 flow [2023-08-30 04:43:06,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-08-30 04:43:06,297 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2023-08-30 04:43:06,298 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 410 flow [2023-08-30 04:43:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.66666666666666) internal successors, (802), 6 states have internal predecessors, (802), 0 states have call successors, (0), 0 states 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 04:43:06,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:43:06,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:43:06,307 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 04:43:06,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:06,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:43:06,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:43:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1253372309, now seen corresponding path program 1 times [2023-08-30 04:43:06,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:43:06,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734169187] [2023-08-30 04:43:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:43:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:43:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:43:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:43:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734169187] [2023-08-30 04:43:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734169187] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:43:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417466153] [2023-08-30 04:43:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:43:07,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:43:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:43:07,023 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 04:43:07,025 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 04:44:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:44:02,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 04:44:02,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:44:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:44:24,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:44:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:44:31,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417466153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:44:31,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:44:31,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-30 04:44:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686602640] [2023-08-30 04:44:31,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:44:31,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 04:44:31,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:44:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 04:44:31,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=168, Unknown=10, NotChecked=0, Total=240 [2023-08-30 04:44:33,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:35,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:37,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:40,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:42,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:42,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 325 [2023-08-30 04:44:42,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 410 flow. Second operand has 16 states, 16 states have (on average 107.6875) internal successors, (1723), 16 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states 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 04:44:42,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:44:42,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 325 [2023-08-30 04:44:42,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:44:44,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:46,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:48,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:50,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:44:57,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:00,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:02,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:04,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:06,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:08,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:17,183 WARN L222 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 43 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 04:45:19,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:22,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:24,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:26,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:29,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:31,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:38,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:40,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:46,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:48,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:50,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:53,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:55,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:57,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:45:59,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:01,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:03,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:09,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:12,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:14,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:17,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:20,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:24,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:46:25,672 INFO L130 PetriNetUnfolder]: 3951/5440 cut-off events. [2023-08-30 04:46:25,672 INFO L131 PetriNetUnfolder]: For 18887/18887 co-relation queries the response was YES. [2023-08-30 04:46:25,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25316 conditions, 5440 events. 3951/5440 cut-off events. For 18887/18887 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23954 event pairs, 361 based on Foata normal form. 25/5465 useless extension candidates. Maximal degree in co-relation 25296. Up to 3339 conditions per place. [2023-08-30 04:46:25,719 INFO L137 encePairwiseOnDemand]: 317/325 looper letters, 216 selfloop transitions, 73 changer transitions 18/307 dead transitions. [2023-08-30 04:46:25,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 307 transitions, 2341 flow [2023-08-30 04:46:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 04:46:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 04:46:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1695 transitions. [2023-08-30 04:46:25,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37252747252747254 [2023-08-30 04:46:25,725 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1695 transitions. [2023-08-30 04:46:25,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1695 transitions. [2023-08-30 04:46:25,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:46:25,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1695 transitions. [2023-08-30 04:46:25,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 121.07142857142857) internal successors, (1695), 14 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states 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 04:46:25,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states 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 04:46:25,735 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 325.0) internal successors, (4875), 15 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states 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 04:46:25,735 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 410 flow. Second operand 14 states and 1695 transitions. [2023-08-30 04:46:25,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 307 transitions, 2341 flow [2023-08-30 04:46:25,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 307 transitions, 2290 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-30 04:46:25,775 INFO L231 Difference]: Finished difference. Result has 88 places, 121 transitions, 1190 flow [2023-08-30 04:46:25,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=325, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1190, PETRI_PLACES=88, PETRI_TRANSITIONS=121} [2023-08-30 04:46:25,776 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2023-08-30 04:46:25,776 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 121 transitions, 1190 flow [2023-08-30 04:46:25,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 107.6875) internal successors, (1723), 16 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states 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 04:46:25,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:46:25,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:46:25,792 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 04:46:25,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 04:46:25,990 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 04:46:25,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:46:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 767085218, now seen corresponding path program 1 times [2023-08-30 04:46:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:46:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814346013] [2023-08-30 04:46:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:46:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:46:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:46:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:46:26,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:46:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814346013] [2023-08-30 04:46:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814346013] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:46:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688131065] [2023-08-30 04:46:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:46:26,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:46:26,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:46:26,925 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 04:46:26,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15