./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.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 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:44:50,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:44:50,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:44:50,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:44:50,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:44:50,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:44:50,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:44:50,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:44:50,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:44:50,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:44:50,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:44:50,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:44:50,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:44:50,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:44:50,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:44:50,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:44:50,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:44:50,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:44:50,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:44:50,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:44:50,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:44:50,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:44:50,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:44:50,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:44:50,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:44:50,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:44:50,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:44:50,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:44:50,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:44:50,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:44:50,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:44:50,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:44:50,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:44:51,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:44:51,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:44:51,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:44:51,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:44:51,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:44:51,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:44:51,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:44:51,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:44:51,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:44:51,037 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:44:51,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:44:51,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:44:51,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:44:51,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:44:51,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:44:51,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:44:51,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:44:51,041 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:44:51,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:44:51,042 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:44:51,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:44:51,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:44:51,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:44:51,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:44:51,043 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:44:51,043 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:44:51,043 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:44:51,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:44:51,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:44:51,044 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:44:51,044 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:44:51,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:44:51,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:44:51,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:44:51,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:44:51,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:44:51,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:44:51,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:44:51,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:44:51,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:44:51,046 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:44:51,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:44:51,046 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:44:51,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:44:51,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:44:51,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:44:51,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:44:51,336 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:44:51,336 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:44:51,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-08-30 05:44:52,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:44:52,773 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:44:52,774 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-08-30 05:44:52,779 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba1fa2be/22533c046a0646e384e0627b9c9852e3/FLAG77ab91823 [2023-08-30 05:44:52,791 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba1fa2be/22533c046a0646e384e0627b9c9852e3 [2023-08-30 05:44:52,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:44:52,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:44:52,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:44:52,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:44:52,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:44:52,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:44:52" (1/1) ... [2023-08-30 05:44:52,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382739af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:52, skipping insertion in model container [2023-08-30 05:44:52,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:44:52" (1/1) ... [2023-08-30 05:44:52,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:44:52,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:44:53,016 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-08-30 05:44:53,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:44:53,034 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:44:53,071 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-08-30 05:44:53,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:44:53,081 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:44:53,082 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:44:53,088 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:44:53,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53 WrapperNode [2023-08-30 05:44:53,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:44:53,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:44:53,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:44:53,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:44:53,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,134 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-08-30 05:44:53,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:44:53,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:44:53,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:44:53,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:44:53,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,174 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:44:53,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:44:53,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:44:53,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:44:53,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (1/1) ... [2023-08-30 05:44:53,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:44:53,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:53,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:44:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:44:53,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:44:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:44:53,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:44:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:44:53,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:44:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:44:53,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:44:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:44:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:44:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:44:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:44:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:44:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:44:53,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:44:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:44:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:44:53,262 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:44:53,367 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:44:53,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:44:53,600 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:44:53,628 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:44:53,637 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 05:44:53,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:44:53 BoogieIcfgContainer [2023-08-30 05:44:53,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:44:53,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:44:53,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:44:53,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:44:53,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:44:52" (1/3) ... [2023-08-30 05:44:53,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379a5903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:44:53, skipping insertion in model container [2023-08-30 05:44:53,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:53" (2/3) ... [2023-08-30 05:44:53,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379a5903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:44:53, skipping insertion in model container [2023-08-30 05:44:53,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:44:53" (3/3) ... [2023-08-30 05:44:53,647 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2023-08-30 05:44:53,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:44:53,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 05:44:53,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:44:53,773 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:44:53,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 119 transitions, 262 flow [2023-08-30 05:44:53,896 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2023-08-30 05:44:53,897 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:44:53,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 7/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-08-30 05:44:53,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 119 transitions, 262 flow [2023-08-30 05:44:53,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 242 flow [2023-08-30 05:44:53,913 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:44:53,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 242 flow [2023-08-30 05:44:53,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 242 flow [2023-08-30 05:44:53,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 242 flow [2023-08-30 05:44:53,977 INFO L130 PetriNetUnfolder]: 7/112 cut-off events. [2023-08-30 05:44:53,979 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:44:53,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 7/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-08-30 05:44:53,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-08-30 05:44:57,309 INFO L134 LiptonReduction]: Checked pairs total: 2027 [2023-08-30 05:44:57,309 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-30 05:44:57,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:44:57,333 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;@13c446c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:44:57,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 05:44:57,334 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:44:57,334 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:44:57,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:57,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:44:57,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:57,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash 445, now seen corresponding path program 1 times [2023-08-30 05:44:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:57,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021120884] [2023-08-30 05:44:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:57,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021120884] [2023-08-30 05:44:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021120884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:57,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:57,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:44:57,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884896079] [2023-08-30 05:44:57,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:44:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:44:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:44:57,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 227 [2023-08-30 05:44:57,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:57,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:57,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 227 [2023-08-30 05:44:57,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:57,518 INFO L130 PetriNetUnfolder]: 356/556 cut-off events. [2023-08-30 05:44:57,518 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 05:44:57,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 556 events. 356/556 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2383 event pairs, 270 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 929. Up to 552 conditions per place. [2023-08-30 05:44:57,523 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-30 05:44:57,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 140 flow [2023-08-30 05:44:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:44:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:44:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 246 transitions. [2023-08-30 05:44:57,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418502202643172 [2023-08-30 05:44:57,534 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 246 transitions. [2023-08-30 05:44:57,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 246 transitions. [2023-08-30 05:44:57,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:57,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 246 transitions. [2023-08-30 05:44:57,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:57,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:57,546 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:57,548 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 246 transitions. [2023-08-30 05:44:57,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 140 flow [2023-08-30 05:44:57,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:44:57,553 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 70 flow [2023-08-30 05:44:57,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-08-30 05:44:57,559 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-08-30 05:44:57,560 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 70 flow [2023-08-30 05:44:57,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:57,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:57,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:44:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:44:57,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:57,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:57,571 INFO L85 PathProgramCache]: Analyzing trace with hash 436374, now seen corresponding path program 1 times [2023-08-30 05:44:57,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:57,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583949630] [2023-08-30 05:44:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:57,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583949630] [2023-08-30 05:44:57,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583949630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:57,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:57,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:44:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018968659] [2023-08-30 05:44:57,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:57,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 227 [2023-08-30 05:44:57,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:57,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:57,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 227 [2023-08-30 05:44:57,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:58,034 INFO L130 PetriNetUnfolder]: 340/529 cut-off events. [2023-08-30 05:44:58,035 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:44:58,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 529 events. 340/529 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2240 event pairs, 258 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 1069. Up to 524 conditions per place. [2023-08-30 05:44:58,040 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 05:44:58,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 120 flow [2023-08-30 05:44:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-30 05:44:58,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919236417033774 [2023-08-30 05:44:58,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-30 05:44:58,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-30 05:44:58,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:58,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-30 05:44:58,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,051 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 70 flow. Second operand 3 states and 335 transitions. [2023-08-30 05:44:58,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 120 flow [2023-08-30 05:44:58,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:44:58,052 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 68 flow [2023-08-30 05:44:58,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-30 05:44:58,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-08-30 05:44:58,053 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 68 flow [2023-08-30 05:44:58,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:58,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:44:58,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:44:58,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:58,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash 436373, now seen corresponding path program 1 times [2023-08-30 05:44:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:58,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466680634] [2023-08-30 05:44:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:58,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466680634] [2023-08-30 05:44:58,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466680634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:58,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:44:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647954200] [2023-08-30 05:44:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:58,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:58,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 227 [2023-08-30 05:44:58,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:58,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 227 [2023-08-30 05:44:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:58,265 INFO L130 PetriNetUnfolder]: 324/502 cut-off events. [2023-08-30 05:44:58,265 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:44:58,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 502 events. 324/502 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2096 event pairs, 246 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 1016. Up to 497 conditions per place. [2023-08-30 05:44:58,269 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 05:44:58,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 114 flow [2023-08-30 05:44:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-30 05:44:58,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669603524229075 [2023-08-30 05:44:58,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-30 05:44:58,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-30 05:44:58,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:58,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-30 05:44:58,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,275 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 68 flow. Second operand 3 states and 318 transitions. [2023-08-30 05:44:58,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 114 flow [2023-08-30 05:44:58,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:58,276 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 65 flow [2023-08-30 05:44:58,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 05:44:58,277 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-08-30 05:44:58,280 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 65 flow [2023-08-30 05:44:58,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:58,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:44:58,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:44:58,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:58,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash 419366196, now seen corresponding path program 1 times [2023-08-30 05:44:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615312512] [2023-08-30 05:44:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:58,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:58,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615312512] [2023-08-30 05:44:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615312512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:58,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:58,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:44:58,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014936014] [2023-08-30 05:44:58,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:58,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:58,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:58,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:58,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:58,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 227 [2023-08-30 05:44:58,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:58,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 227 [2023-08-30 05:44:58,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:58,538 INFO L130 PetriNetUnfolder]: 303/467 cut-off events. [2023-08-30 05:44:58,539 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:44:58,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 467 events. 303/467 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1927 event pairs, 231 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 947. Up to 462 conditions per place. [2023-08-30 05:44:58,542 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 05:44:58,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 107 flow [2023-08-30 05:44:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-08-30 05:44:58,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46402349486049926 [2023-08-30 05:44:58,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-08-30 05:44:58,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-08-30 05:44:58,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:58,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-08-30 05:44:58,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,550 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 65 flow. Second operand 3 states and 316 transitions. [2023-08-30 05:44:58,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 107 flow [2023-08-30 05:44:58,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:58,552 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2023-08-30 05:44:58,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-30 05:44:58,553 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2023-08-30 05:44:58,553 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2023-08-30 05:44:58,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:58,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:44:58,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:44:58,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:58,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 419366194, now seen corresponding path program 1 times [2023-08-30 05:44:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:58,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403807662] [2023-08-30 05:44:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403807662] [2023-08-30 05:44:58,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403807662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:58,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:58,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:44:58,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191264583] [2023-08-30 05:44:58,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:58,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:58,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 227 [2023-08-30 05:44:58,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:58,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 227 [2023-08-30 05:44:58,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:58,746 INFO L130 PetriNetUnfolder]: 282/432 cut-off events. [2023-08-30 05:44:58,746 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:44:58,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 432 events. 282/432 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1709 event pairs, 216 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 878. Up to 427 conditions per place. [2023-08-30 05:44:58,750 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-30 05:44:58,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 100 flow [2023-08-30 05:44:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-30 05:44:58,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831130690161527 [2023-08-30 05:44:58,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-30 05:44:58,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-30 05:44:58,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:58,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-30 05:44:58,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,757 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 329 transitions. [2023-08-30 05:44:58,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 100 flow [2023-08-30 05:44:58,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:58,758 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 59 flow [2023-08-30 05:44:58,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-30 05:44:58,761 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-08-30 05:44:58,761 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 59 flow [2023-08-30 05:44:58,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:58,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:58,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:44:58,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:58,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:58,762 INFO L85 PathProgramCache]: Analyzing trace with hash -716002685, now seen corresponding path program 1 times [2023-08-30 05:44:58,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595822852] [2023-08-30 05:44:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:58,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:58,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:58,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595822852] [2023-08-30 05:44:58,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595822852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:58,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:58,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:44:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386592110] [2023-08-30 05:44:58,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:58,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:58,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:58,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:58,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 227 [2023-08-30 05:44:58,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:58,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 227 [2023-08-30 05:44:58,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:58,913 INFO L130 PetriNetUnfolder]: 224/350 cut-off events. [2023-08-30 05:44:58,913 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:44:58,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 350 events. 224/350 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1321 event pairs, 170 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 715. Up to 345 conditions per place. [2023-08-30 05:44:58,916 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-30 05:44:58,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 97 flow [2023-08-30 05:44:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-30 05:44:58,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46255506607929514 [2023-08-30 05:44:58,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-30 05:44:58,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-30 05:44:58,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:58,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-30 05:44:58,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,921 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 59 flow. Second operand 3 states and 315 transitions. [2023-08-30 05:44:58,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 97 flow [2023-08-30 05:44:58,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:58,922 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 58 flow [2023-08-30 05:44:58,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-30 05:44:58,925 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-08-30 05:44:58,925 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 58 flow [2023-08-30 05:44:58,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:58,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:58,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:58,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:44:58,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:58,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -716002686, now seen corresponding path program 1 times [2023-08-30 05:44:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:58,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315573930] [2023-08-30 05:44:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:58,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:59,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:59,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315573930] [2023-08-30 05:44:59,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315573930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:59,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:59,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:44:59,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588103949] [2023-08-30 05:44:59,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:59,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:44:59,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:59,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:44:59,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:44:59,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 227 [2023-08-30 05:44:59,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:59,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 227 [2023-08-30 05:44:59,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:59,189 INFO L130 PetriNetUnfolder]: 166/268 cut-off events. [2023-08-30 05:44:59,189 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:44:59,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 268 events. 166/268 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 965 event pairs, 124 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 552. Up to 263 conditions per place. [2023-08-30 05:44:59,191 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 05:44:59,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 94 flow [2023-08-30 05:44:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-30 05:44:59,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42143906020558003 [2023-08-30 05:44:59,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-30 05:44:59,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-30 05:44:59,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:59,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-30 05:44:59,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,196 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 58 flow. Second operand 3 states and 287 transitions. [2023-08-30 05:44:59,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 94 flow [2023-08-30 05:44:59,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:59,198 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 57 flow [2023-08-30 05:44:59,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-30 05:44:59,198 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-08-30 05:44:59,198 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 57 flow [2023-08-30 05:44:59,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:59,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:59,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:44:59,199 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:59,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash 751576771, now seen corresponding path program 1 times [2023-08-30 05:44:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026775821] [2023-08-30 05:44:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:59,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026775821] [2023-08-30 05:44:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026775821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:44:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852155681] [2023-08-30 05:44:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:44:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:44:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:44:59,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 227 [2023-08-30 05:44:59,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:59,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 227 [2023-08-30 05:44:59,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:59,659 INFO L130 PetriNetUnfolder]: 190/289 cut-off events. [2023-08-30 05:44:59,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:44:59,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 289 events. 190/289 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 967 event pairs, 9 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 599. Up to 135 conditions per place. [2023-08-30 05:44:59,661 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 33 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-08-30 05:44:59,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 165 flow [2023-08-30 05:44:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:44:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:44:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-08-30 05:44:59,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486784140969163 [2023-08-30 05:44:59,662 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-08-30 05:44:59,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-08-30 05:44:59,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:59,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-08-30 05:44:59,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,664 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 57 flow. Second operand 4 states and 442 transitions. [2023-08-30 05:44:59,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 165 flow [2023-08-30 05:44:59,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:44:59,665 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 74 flow [2023-08-30 05:44:59,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-08-30 05:44:59,666 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-08-30 05:44:59,666 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 74 flow [2023-08-30 05:44:59,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:59,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:59,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:44:59,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:59,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1774895439, now seen corresponding path program 2 times [2023-08-30 05:44:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600819256] [2023-08-30 05:44:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:59,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600819256] [2023-08-30 05:44:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600819256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:59,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:44:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782748772] [2023-08-30 05:44:59,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:44:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:44:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:44:59,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 227 [2023-08-30 05:44:59,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:59,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 227 [2023-08-30 05:44:59,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:59,967 INFO L130 PetriNetUnfolder]: 98/172 cut-off events. [2023-08-30 05:44:59,968 INFO L131 PetriNetUnfolder]: For 19/32 co-relation queries the response was YES. [2023-08-30 05:44:59,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 172 events. 98/172 cut-off events. For 19/32 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 490 event pairs, 9 based on Foata normal form. 13/175 useless extension candidates. Maximal degree in co-relation 386. Up to 103 conditions per place. [2023-08-30 05:44:59,969 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-08-30 05:44:59,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 165 flow [2023-08-30 05:44:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:44:59,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:44:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 435 transitions. [2023-08-30 05:44:59,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790748898678414 [2023-08-30 05:44:59,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 435 transitions. [2023-08-30 05:44:59,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 435 transitions. [2023-08-30 05:44:59,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:59,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 435 transitions. [2023-08-30 05:44:59,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.75) internal successors, (435), 4 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 05:44:59,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,972 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,972 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 74 flow. Second operand 4 states and 435 transitions. [2023-08-30 05:44:59,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 165 flow [2023-08-30 05:44:59,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:59,973 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2023-08-30 05:44:59,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-30 05:44:59,974 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-08-30 05:44:59,974 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2023-08-30 05:44:59,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:59,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:59,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:59,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:44:59,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:44:59,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:59,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1938670985, now seen corresponding path program 3 times [2023-08-30 05:44:59,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:59,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321568075] [2023-08-30 05:44:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:00,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:00,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321568075] [2023-08-30 05:45:00,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321568075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:45:00,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:45:00,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:45:00,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569836621] [2023-08-30 05:45:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:45:00,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:45:00,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:00,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:45:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:45:00,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2023-08-30 05:45:00,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:00,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2023-08-30 05:45:00,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:00,184 INFO L130 PetriNetUnfolder]: 154/249 cut-off events. [2023-08-30 05:45:00,184 INFO L131 PetriNetUnfolder]: For 100/110 co-relation queries the response was YES. [2023-08-30 05:45:00,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 249 events. 154/249 cut-off events. For 100/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 764 event pairs, 12 based on Foata normal form. 18/267 useless extension candidates. Maximal degree in co-relation 622. Up to 87 conditions per place. [2023-08-30 05:45:00,185 INFO L137 encePairwiseOnDemand]: 221/227 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-08-30 05:45:00,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 224 flow [2023-08-30 05:45:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:45:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:45:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2023-08-30 05:45:00,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665198237885464 [2023-08-30 05:45:00,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2023-08-30 05:45:00,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2023-08-30 05:45:00,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:00,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2023-08-30 05:45:00,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,189 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 5 states and 541 transitions. [2023-08-30 05:45:00,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 224 flow [2023-08-30 05:45:00,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:45:00,190 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 132 flow [2023-08-30 05:45:00,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-08-30 05:45:00,191 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-30 05:45:00,191 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 132 flow [2023-08-30 05:45:00,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:00,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:00,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:45:00,191 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:00,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash 456787813, now seen corresponding path program 4 times [2023-08-30 05:45:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:00,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523633692] [2023-08-30 05:45:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:00,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523633692] [2023-08-30 05:45:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523633692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:45:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:45:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:45:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624670176] [2023-08-30 05:45:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:45:00,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:45:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:45:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:45:00,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 227 [2023-08-30 05:45:00,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 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 05:45:00,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:00,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 227 [2023-08-30 05:45:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:00,480 INFO L130 PetriNetUnfolder]: 239/394 cut-off events. [2023-08-30 05:45:00,480 INFO L131 PetriNetUnfolder]: For 459/472 co-relation queries the response was YES. [2023-08-30 05:45:00,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 394 events. 239/394 cut-off events. For 459/472 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1342 event pairs, 15 based on Foata normal form. 27/421 useless extension candidates. Maximal degree in co-relation 1121. Up to 236 conditions per place. [2023-08-30 05:45:00,482 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 31 selfloop transitions, 3 changer transitions 26/62 dead transitions. [2023-08-30 05:45:00,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 378 flow [2023-08-30 05:45:00,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:45:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:45:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 733 transitions. [2023-08-30 05:45:00,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46129641283826306 [2023-08-30 05:45:00,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 733 transitions. [2023-08-30 05:45:00,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 733 transitions. [2023-08-30 05:45:00,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:00,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 733 transitions. [2023-08-30 05:45:00,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,488 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,488 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 132 flow. Second operand 7 states and 733 transitions. [2023-08-30 05:45:00,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 378 flow [2023-08-30 05:45:00,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:45:00,492 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 161 flow [2023-08-30 05:45:00,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2023-08-30 05:45:00,493 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-08-30 05:45:00,494 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 161 flow [2023-08-30 05:45:00,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 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 05:45:00,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:00,494 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] [2023-08-30 05:45:00,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:45:00,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:00,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1376646480, now seen corresponding path program 1 times [2023-08-30 05:45:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:00,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039425984] [2023-08-30 05:45:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:00,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:00,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039425984] [2023-08-30 05:45:00,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039425984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:45:00,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:45:00,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:45:00,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91644557] [2023-08-30 05:45:00,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:45:00,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:45:00,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:45:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:45:00,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 227 [2023-08-30 05:45:00,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:00,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 227 [2023-08-30 05:45:00,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:00,793 INFO L130 PetriNetUnfolder]: 246/409 cut-off events. [2023-08-30 05:45:00,793 INFO L131 PetriNetUnfolder]: For 720/720 co-relation queries the response was YES. [2023-08-30 05:45:00,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 409 events. 246/409 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1274 event pairs, 0 based on Foata normal form. 20/429 useless extension candidates. Maximal degree in co-relation 1511. Up to 137 conditions per place. [2023-08-30 05:45:00,796 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 61 selfloop transitions, 17 changer transitions 8/86 dead transitions. [2023-08-30 05:45:00,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 599 flow [2023-08-30 05:45:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:45:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:45:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 944 transitions. [2023-08-30 05:45:00,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4620655898188938 [2023-08-30 05:45:00,798 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 944 transitions. [2023-08-30 05:45:00,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 944 transitions. [2023-08-30 05:45:00,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:00,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 944 transitions. [2023-08-30 05:45:00,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.88888888888889) internal successors, (944), 9 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,804 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,804 INFO L175 Difference]: Start difference. First operand has 53 places, 30 transitions, 161 flow. Second operand 9 states and 944 transitions. [2023-08-30 05:45:00,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 599 flow [2023-08-30 05:45:00,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 570 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 05:45:00,808 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 294 flow [2023-08-30 05:45:00,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=294, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-08-30 05:45:00,810 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-08-30 05:45:00,810 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 294 flow [2023-08-30 05:45:00,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:00,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:00,810 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] [2023-08-30 05:45:00,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 05:45:00,811 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:00,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:00,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1246459556, now seen corresponding path program 2 times [2023-08-30 05:45:00,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:00,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837337838] [2023-08-30 05:45:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:00,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837337838] [2023-08-30 05:45:00,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837337838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:45:00,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:45:00,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:45:00,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100967997] [2023-08-30 05:45:00,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:45:00,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:45:00,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:00,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:45:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:45:01,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 227 [2023-08-30 05:45:01,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:01,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 227 [2023-08-30 05:45:01,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:01,202 INFO L130 PetriNetUnfolder]: 277/523 cut-off events. [2023-08-30 05:45:01,202 INFO L131 PetriNetUnfolder]: For 2560/2584 co-relation queries the response was YES. [2023-08-30 05:45:01,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 523 events. 277/523 cut-off events. For 2560/2584 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2218 event pairs, 16 based on Foata normal form. 38/550 useless extension candidates. Maximal degree in co-relation 2364. Up to 257 conditions per place. [2023-08-30 05:45:01,206 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 41 selfloop transitions, 5 changer transitions 40/94 dead transitions. [2023-08-30 05:45:01,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 834 flow [2023-08-30 05:45:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:45:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:45:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 811 transitions. [2023-08-30 05:45:01,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44658590308370044 [2023-08-30 05:45:01,208 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 811 transitions. [2023-08-30 05:45:01,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 811 transitions. [2023-08-30 05:45:01,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:01,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 811 transitions. [2023-08-30 05:45:01,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.375) internal successors, (811), 8 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,212 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,212 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 294 flow. Second operand 8 states and 811 transitions. [2023-08-30 05:45:01,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 834 flow [2023-08-30 05:45:01,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 789 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 05:45:01,219 INFO L231 Difference]: Finished difference. Result has 68 places, 42 transitions, 336 flow [2023-08-30 05:45:01,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2023-08-30 05:45:01,219 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-08-30 05:45:01,219 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 336 flow [2023-08-30 05:45:01,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:01,220 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] [2023-08-30 05:45:01,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:45:01,220 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:01,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1142820548, now seen corresponding path program 1 times [2023-08-30 05:45:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615279013] [2023-08-30 05:45:01,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:01,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615279013] [2023-08-30 05:45:01,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615279013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:45:01,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:45:01,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:45:01,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773774568] [2023-08-30 05:45:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:45:01,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:45:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:45:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:45:01,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 227 [2023-08-30 05:45:01,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:01,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 227 [2023-08-30 05:45:01,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:01,706 INFO L130 PetriNetUnfolder]: 349/587 cut-off events. [2023-08-30 05:45:01,706 INFO L131 PetriNetUnfolder]: For 4281/4320 co-relation queries the response was YES. [2023-08-30 05:45:01,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3177 conditions, 587 events. 349/587 cut-off events. For 4281/4320 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2179 event pairs, 33 based on Foata normal form. 47/629 useless extension candidates. Maximal degree in co-relation 3155. Up to 373 conditions per place. [2023-08-30 05:45:01,711 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 47 selfloop transitions, 5 changer transitions 34/89 dead transitions. [2023-08-30 05:45:01,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 935 flow [2023-08-30 05:45:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:45:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:45:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 807 transitions. [2023-08-30 05:45:01,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44438325991189426 [2023-08-30 05:45:01,715 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 807 transitions. [2023-08-30 05:45:01,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 807 transitions. [2023-08-30 05:45:01,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:01,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 807 transitions. [2023-08-30 05:45:01,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.875) internal successors, (807), 8 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,721 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,721 INFO L175 Difference]: Start difference. First operand has 68 places, 42 transitions, 336 flow. Second operand 8 states and 807 transitions. [2023-08-30 05:45:01,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 935 flow [2023-08-30 05:45:01,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 888 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-30 05:45:01,733 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 386 flow [2023-08-30 05:45:01,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=386, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2023-08-30 05:45:01,734 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-08-30 05:45:01,734 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 386 flow [2023-08-30 05:45:01,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:01,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:01,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:01,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 05:45:01,735 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:01,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash -475924067, now seen corresponding path program 3 times [2023-08-30 05:45:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:01,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128643563] [2023-08-30 05:45:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:02,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:02,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128643563] [2023-08-30 05:45:02,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128643563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661574704] [2023-08-30 05:45:02,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:45:02,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:02,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:02,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:02,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 05:45:02,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:45:02,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:45:02,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:45:02,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:02,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:02,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661574704] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:02,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:02,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2023-08-30 05:45:02,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865712551] [2023-08-30 05:45:02,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:02,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:45:02,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:02,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:45:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:45:02,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 227 [2023-08-30 05:45:02,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 44 transitions, 386 flow. Second operand has 13 states, 13 states have (on average 91.53846153846153) internal successors, (1190), 13 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:02,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:02,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 227 [2023-08-30 05:45:02,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:03,456 INFO L130 PetriNetUnfolder]: 388/655 cut-off events. [2023-08-30 05:45:03,457 INFO L131 PetriNetUnfolder]: For 6762/6762 co-relation queries the response was YES. [2023-08-30 05:45:03,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 655 events. 388/655 cut-off events. For 6762/6762 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2428 event pairs, 13 based on Foata normal form. 58/713 useless extension candidates. Maximal degree in co-relation 3745. Up to 187 conditions per place. [2023-08-30 05:45:03,462 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 58 selfloop transitions, 20 changer transitions 64/142 dead transitions. [2023-08-30 05:45:03,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 142 transitions, 1669 flow [2023-08-30 05:45:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 05:45:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 05:45:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1888 transitions. [2023-08-30 05:45:03,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41585903083700443 [2023-08-30 05:45:03,466 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1888 transitions. [2023-08-30 05:45:03,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1888 transitions. [2023-08-30 05:45:03,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:03,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1888 transitions. [2023-08-30 05:45:03,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.4) internal successors, (1888), 20 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:03,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 227.0) internal successors, (4767), 21 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:03,475 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 227.0) internal successors, (4767), 21 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:03,475 INFO L175 Difference]: Start difference. First operand has 72 places, 44 transitions, 386 flow. Second operand 20 states and 1888 transitions. [2023-08-30 05:45:03,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 142 transitions, 1669 flow [2023-08-30 05:45:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 142 transitions, 1492 flow, removed 84 selfloop flow, removed 6 redundant places. [2023-08-30 05:45:03,488 INFO L231 Difference]: Finished difference. Result has 95 places, 48 transitions, 498 flow [2023-08-30 05:45:03,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=498, PETRI_PLACES=95, PETRI_TRANSITIONS=48} [2023-08-30 05:45:03,488 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2023-08-30 05:45:03,488 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 48 transitions, 498 flow [2023-08-30 05:45:03,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 91.53846153846153) internal successors, (1190), 13 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:03,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:03,489 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 05:45:03,505 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 05:45:03,695 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,SelfDestructingSolverStorable14 [2023-08-30 05:45:03,695 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:03,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1700429557, now seen corresponding path program 1 times [2023-08-30 05:45:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768576319] [2023-08-30 05:45:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768576319] [2023-08-30 05:45:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768576319] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:04,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284648624] [2023-08-30 05:45:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:04,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:04,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:04,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:04,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 05:45:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:04,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:45:04,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:04,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:04,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284648624] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:04,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:04,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 05:45:04,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807564038] [2023-08-30 05:45:04,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:04,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:45:04,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:04,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:45:04,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:45:04,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-08-30 05:45:04,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 48 transitions, 498 flow. Second operand has 16 states, 16 states have (on average 88.875) internal successors, (1422), 16 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:04,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:04,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-08-30 05:45:04,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:06,048 INFO L130 PetriNetUnfolder]: 691/1285 cut-off events. [2023-08-30 05:45:06,048 INFO L131 PetriNetUnfolder]: For 29523/29586 co-relation queries the response was YES. [2023-08-30 05:45:06,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 1285 events. 691/1285 cut-off events. For 29523/29586 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6566 event pairs, 10 based on Foata normal form. 91/1356 useless extension candidates. Maximal degree in co-relation 9351. Up to 389 conditions per place. [2023-08-30 05:45:06,058 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 115 selfloop transitions, 66 changer transitions 140/330 dead transitions. [2023-08-30 05:45:06,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 330 transitions, 4223 flow [2023-08-30 05:45:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-30 05:45:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-30 05:45:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3982 transitions. [2023-08-30 05:45:06,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40795000512242596 [2023-08-30 05:45:06,064 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3982 transitions. [2023-08-30 05:45:06,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3982 transitions. [2023-08-30 05:45:06,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:06,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3982 transitions. [2023-08-30 05:45:06,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 92.6046511627907) internal successors, (3982), 43 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:06,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 227.0) internal successors, (9988), 44 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:06,080 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 227.0) internal successors, (9988), 44 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:06,080 INFO L175 Difference]: Start difference. First operand has 95 places, 48 transitions, 498 flow. Second operand 43 states and 3982 transitions. [2023-08-30 05:45:06,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 330 transitions, 4223 flow [2023-08-30 05:45:06,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 330 transitions, 3316 flow, removed 408 selfloop flow, removed 16 redundant places. [2023-08-30 05:45:06,118 INFO L231 Difference]: Finished difference. Result has 121 places, 103 transitions, 1347 flow [2023-08-30 05:45:06,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1347, PETRI_PLACES=121, PETRI_TRANSITIONS=103} [2023-08-30 05:45:06,118 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2023-08-30 05:45:06,118 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 103 transitions, 1347 flow [2023-08-30 05:45:06,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.875) internal successors, (1422), 16 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:06,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:06,119 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:06,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:45:06,324 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,SelfDestructingSolverStorable15 [2023-08-30 05:45:06,324 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:06,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -245747109, now seen corresponding path program 2 times [2023-08-30 05:45:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316537889] [2023-08-30 05:45:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:06,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316537889] [2023-08-30 05:45:06,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316537889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:06,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103928242] [2023-08-30 05:45:06,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:45:06,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:06,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:06,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:06,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 05:45:06,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:45:06,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:45:06,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:45:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:07,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:07,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103928242] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:07,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:07,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2023-08-30 05:45:07,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709504336] [2023-08-30 05:45:07,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:07,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:45:07,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:07,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:45:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:45:07,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 227 [2023-08-30 05:45:07,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 103 transitions, 1347 flow. Second operand has 16 states, 16 states have (on average 91.375) internal successors, (1462), 16 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:07,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:07,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 227 [2023-08-30 05:45:07,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:09,217 INFO L130 PetriNetUnfolder]: 1075/1786 cut-off events. [2023-08-30 05:45:09,217 INFO L131 PetriNetUnfolder]: For 26002/26002 co-relation queries the response was YES. [2023-08-30 05:45:09,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11681 conditions, 1786 events. 1075/1786 cut-off events. For 26002/26002 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8207 event pairs, 17 based on Foata normal form. 100/1886 useless extension candidates. Maximal degree in co-relation 11645. Up to 509 conditions per place. [2023-08-30 05:45:09,243 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 157 selfloop transitions, 80 changer transitions 150/387 dead transitions. [2023-08-30 05:45:09,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 387 transitions, 5070 flow [2023-08-30 05:45:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-08-30 05:45:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-08-30 05:45:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5696 transitions. [2023-08-30 05:45:09,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113526395609157 [2023-08-30 05:45:09,255 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5696 transitions. [2023-08-30 05:45:09,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5696 transitions. [2023-08-30 05:45:09,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:09,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5696 transitions. [2023-08-30 05:45:09,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 93.37704918032787) internal successors, (5696), 61 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:09,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 227.0) internal successors, (14074), 62 states have internal predecessors, (14074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:09,288 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 227.0) internal successors, (14074), 62 states have internal predecessors, (14074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:09,288 INFO L175 Difference]: Start difference. First operand has 121 places, 103 transitions, 1347 flow. Second operand 61 states and 5696 transitions. [2023-08-30 05:45:09,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 387 transitions, 5070 flow [2023-08-30 05:45:09,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 387 transitions, 3352 flow, removed 827 selfloop flow, removed 11 redundant places. [2023-08-30 05:45:09,371 INFO L231 Difference]: Finished difference. Result has 193 places, 145 transitions, 1394 flow [2023-08-30 05:45:09,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1394, PETRI_PLACES=193, PETRI_TRANSITIONS=145} [2023-08-30 05:45:09,371 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2023-08-30 05:45:09,372 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 145 transitions, 1394 flow [2023-08-30 05:45:09,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 91.375) internal successors, (1462), 16 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:09,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:09,372 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:09,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 05:45:09,579 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 05:45:09,579 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:09,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash 163521168, now seen corresponding path program 2 times [2023-08-30 05:45:09,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:09,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584582151] [2023-08-30 05:45:09,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:09,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:09,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584582151] [2023-08-30 05:45:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584582151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838807951] [2023-08-30 05:45:09,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:45:09,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:09,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:09,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:09,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 05:45:10,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:45:10,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:45:10,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:45:10,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:10,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:10,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838807951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:10,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:10,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-30 05:45:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976179678] [2023-08-30 05:45:10,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:10,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:45:10,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:45:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:45:10,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 227 [2023-08-30 05:45:10,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 145 transitions, 1394 flow. Second operand has 19 states, 19 states have (on average 86.36842105263158) internal successors, (1641), 19 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:10,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:10,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 227 [2023-08-30 05:45:10,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:12,578 INFO L130 PetriNetUnfolder]: 1628/2701 cut-off events. [2023-08-30 05:45:12,579 INFO L131 PetriNetUnfolder]: For 70364/70364 co-relation queries the response was YES. [2023-08-30 05:45:12,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15998 conditions, 2701 events. 1628/2701 cut-off events. For 70364/70364 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13660 event pairs, 31 based on Foata normal form. 132/2833 useless extension candidates. Maximal degree in co-relation 15928. Up to 562 conditions per place. [2023-08-30 05:45:12,608 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 208 selfloop transitions, 116 changer transitions 140/464 dead transitions. [2023-08-30 05:45:12,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 464 transitions, 5447 flow [2023-08-30 05:45:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-30 05:45:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-30 05:45:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4375 transitions. [2023-08-30 05:45:12,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933291378225299 [2023-08-30 05:45:12,614 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4375 transitions. [2023-08-30 05:45:12,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4375 transitions. [2023-08-30 05:45:12,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:12,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4375 transitions. [2023-08-30 05:45:12,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 89.28571428571429) internal successors, (4375), 49 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:12,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 227.0) internal successors, (11350), 50 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:12,630 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 227.0) internal successors, (11350), 50 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:12,630 INFO L175 Difference]: Start difference. First operand has 193 places, 145 transitions, 1394 flow. Second operand 49 states and 4375 transitions. [2023-08-30 05:45:12,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 464 transitions, 5447 flow [2023-08-30 05:45:12,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 464 transitions, 4502 flow, removed 467 selfloop flow, removed 37 redundant places. [2023-08-30 05:45:12,767 INFO L231 Difference]: Finished difference. Result has 193 places, 195 transitions, 2113 flow [2023-08-30 05:45:12,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2113, PETRI_PLACES=193, PETRI_TRANSITIONS=195} [2023-08-30 05:45:12,768 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2023-08-30 05:45:12,768 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 195 transitions, 2113 flow [2023-08-30 05:45:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.36842105263158) internal successors, (1641), 19 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:12,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:12,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:12,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 05:45:12,974 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 05:45:12,974 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:12,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash -541230212, now seen corresponding path program 3 times [2023-08-30 05:45:12,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:12,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462101059] [2023-08-30 05:45:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462101059] [2023-08-30 05:45:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462101059] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84456729] [2023-08-30 05:45:13,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:45:13,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:13,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:13,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:13,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 05:45:13,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 05:45:13,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:45:13,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:45:13,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:13,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:13,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84456729] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:13,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:13,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-08-30 05:45:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558337836] [2023-08-30 05:45:13,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:13,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 05:45:13,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 05:45:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-08-30 05:45:14,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 227 [2023-08-30 05:45:14,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 195 transitions, 2113 flow. Second operand has 21 states, 21 states have (on average 86.04761904761905) internal successors, (1807), 21 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:14,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:14,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 227 [2023-08-30 05:45:14,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:19,889 INFO L130 PetriNetUnfolder]: 3577/6088 cut-off events. [2023-08-30 05:45:19,890 INFO L131 PetriNetUnfolder]: For 157970/157970 co-relation queries the response was YES. [2023-08-30 05:45:20,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39586 conditions, 6088 events. 3577/6088 cut-off events. For 157970/157970 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36983 event pairs, 127 based on Foata normal form. 358/6446 useless extension candidates. Maximal degree in co-relation 39520. Up to 1168 conditions per place. [2023-08-30 05:45:20,040 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 367 selfloop transitions, 347 changer transitions 365/1079 dead transitions. [2023-08-30 05:45:20,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1079 transitions, 13773 flow [2023-08-30 05:45:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-08-30 05:45:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-08-30 05:45:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 11201 transitions. [2023-08-30 05:45:20,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916159709111251 [2023-08-30 05:45:20,055 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 11201 transitions. [2023-08-30 05:45:20,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 11201 transitions. [2023-08-30 05:45:20,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:20,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 11201 transitions. [2023-08-30 05:45:20,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 88.89682539682539) internal successors, (11201), 126 states have internal predecessors, (11201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:20,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 227.0) internal successors, (28829), 127 states have internal predecessors, (28829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:20,115 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 227.0) internal successors, (28829), 127 states have internal predecessors, (28829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:20,115 INFO L175 Difference]: Start difference. First operand has 193 places, 195 transitions, 2113 flow. Second operand 126 states and 11201 transitions. [2023-08-30 05:45:20,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1079 transitions, 13773 flow [2023-08-30 05:45:20,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1079 transitions, 11978 flow, removed 796 selfloop flow, removed 30 redundant places. [2023-08-30 05:45:20,491 INFO L231 Difference]: Finished difference. Result has 340 places, 419 transitions, 5412 flow [2023-08-30 05:45:20,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=5412, PETRI_PLACES=340, PETRI_TRANSITIONS=419} [2023-08-30 05:45:20,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 297 predicate places. [2023-08-30 05:45:20,492 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 419 transitions, 5412 flow [2023-08-30 05:45:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 86.04761904761905) internal successors, (1807), 21 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:20,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:20,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:20,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:45:20,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:20,699 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:20,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash 113633177, now seen corresponding path program 4 times [2023-08-30 05:45:20,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986360978] [2023-08-30 05:45:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:21,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986360978] [2023-08-30 05:45:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986360978] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109602493] [2023-08-30 05:45:21,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:45:21,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:21,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:21,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:21,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 05:45:21,260 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:45:21,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:45:21,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 05:45:21,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:21,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109602493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:21,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:21,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 20 [2023-08-30 05:45:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428127020] [2023-08-30 05:45:21,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:21,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 05:45:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 05:45:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-08-30 05:45:22,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-08-30 05:45:22,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 419 transitions, 5412 flow. Second operand has 21 states, 21 states have (on average 88.80952380952381) internal successors, (1865), 21 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:22,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:22,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-08-30 05:45:22,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:26,836 INFO L130 PetriNetUnfolder]: 5774/9774 cut-off events. [2023-08-30 05:45:26,837 INFO L131 PetriNetUnfolder]: For 1118260/1118282 co-relation queries the response was YES. [2023-08-30 05:45:26,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97415 conditions, 9774 events. 5774/9774 cut-off events. For 1118260/1118282 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 64431 event pairs, 138 based on Foata normal form. 398/10154 useless extension candidates. Maximal degree in co-relation 97293. Up to 2136 conditions per place. [2023-08-30 05:45:26,980 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 330 selfloop transitions, 495 changer transitions 442/1273 dead transitions. [2023-08-30 05:45:26,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1273 transitions, 21798 flow [2023-08-30 05:45:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-08-30 05:45:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-08-30 05:45:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 7251 transitions. [2023-08-30 05:45:26,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40433837060168404 [2023-08-30 05:45:26,989 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 7251 transitions. [2023-08-30 05:45:26,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 7251 transitions. [2023-08-30 05:45:26,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:26,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 7251 transitions. [2023-08-30 05:45:26,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 91.78481012658227) internal successors, (7251), 79 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:27,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 227.0) internal successors, (18160), 80 states have internal predecessors, (18160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:27,015 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 227.0) internal successors, (18160), 80 states have internal predecessors, (18160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:27,015 INFO L175 Difference]: Start difference. First operand has 340 places, 419 transitions, 5412 flow. Second operand 79 states and 7251 transitions. [2023-08-30 05:45:27,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1273 transitions, 21798 flow [2023-08-30 05:45:28,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1273 transitions, 16437 flow, removed 2486 selfloop flow, removed 82 redundant places. [2023-08-30 05:45:28,765 INFO L231 Difference]: Finished difference. Result has 320 places, 652 transitions, 9058 flow [2023-08-30 05:45:28,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=9058, PETRI_PLACES=320, PETRI_TRANSITIONS=652} [2023-08-30 05:45:28,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2023-08-30 05:45:28,766 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 652 transitions, 9058 flow [2023-08-30 05:45:28,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 88.80952380952381) internal successors, (1865), 21 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:28,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:28,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:28,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 05:45:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:28,973 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:28,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1677584677, now seen corresponding path program 5 times [2023-08-30 05:45:28,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:28,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008788528] [2023-08-30 05:45:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:29,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:29,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008788528] [2023-08-30 05:45:29,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008788528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:29,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55028381] [2023-08-30 05:45:29,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:45:29,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:29,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:29,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:29,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 05:45:29,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 05:45:29,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:45:29,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 05:45:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:29,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:30,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55028381] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:30,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:30,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2023-08-30 05:45:30,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223965630] [2023-08-30 05:45:30,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:30,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 05:45:30,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:30,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 05:45:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-08-30 05:45:30,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-08-30 05:45:30,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 652 transitions, 9058 flow. Second operand has 24 states, 24 states have (on average 88.0) internal successors, (2112), 24 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:30,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:30,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-08-30 05:45:30,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:45:38,622 INFO L130 PetriNetUnfolder]: 8745/16381 cut-off events. [2023-08-30 05:45:38,622 INFO L131 PetriNetUnfolder]: For 541146/541228 co-relation queries the response was YES. [2023-08-30 05:45:38,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134334 conditions, 16381 events. 8745/16381 cut-off events. For 541146/541228 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 135658 event pairs, 174 based on Foata normal form. 586/16786 useless extension candidates. Maximal degree in co-relation 134229. Up to 2926 conditions per place. [2023-08-30 05:45:39,029 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 505 selfloop transitions, 1173 changer transitions 693/2390 dead transitions. [2023-08-30 05:45:39,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 2390 transitions, 39410 flow [2023-08-30 05:45:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-08-30 05:45:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2023-08-30 05:45:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 9590 transitions. [2023-08-30 05:45:39,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40621823110809896 [2023-08-30 05:45:39,041 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 9590 transitions. [2023-08-30 05:45:39,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 9590 transitions. [2023-08-30 05:45:39,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:45:39,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 9590 transitions. [2023-08-30 05:45:39,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 92.21153846153847) internal successors, (9590), 104 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:39,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 227.0) internal successors, (23835), 105 states have internal predecessors, (23835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:39,079 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 227.0) internal successors, (23835), 105 states have internal predecessors, (23835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:39,079 INFO L175 Difference]: Start difference. First operand has 320 places, 652 transitions, 9058 flow. Second operand 104 states and 9590 transitions. [2023-08-30 05:45:39,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 2390 transitions, 39410 flow [2023-08-30 05:45:42,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 2390 transitions, 32307 flow, removed 2683 selfloop flow, removed 52 redundant places. [2023-08-30 05:45:42,663 INFO L231 Difference]: Finished difference. Result has 372 places, 1463 transitions, 22776 flow [2023-08-30 05:45:42,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=8067, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=22776, PETRI_PLACES=372, PETRI_TRANSITIONS=1463} [2023-08-30 05:45:42,664 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2023-08-30 05:45:42,664 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 1463 transitions, 22776 flow [2023-08-30 05:45:42,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 88.0) internal successors, (2112), 24 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:42,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:45:42,664 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:45:42,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 05:45:42,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:42,870 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:45:42,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:45:42,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2098640562, now seen corresponding path program 6 times [2023-08-30 05:45:42,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:45:42,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766136170] [2023-08-30 05:45:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:45:42,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:45:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:45:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:45:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766136170] [2023-08-30 05:45:43,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766136170] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:45:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138991751] [2023-08-30 05:45:43,373 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:45:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:45:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:45:43,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:45:43,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 05:45:43,497 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-30 05:45:43,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:45:43,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 05:45:43,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:45:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:45:43,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:45:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:45:44,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138991751] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:45:44,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:45:44,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 26 [2023-08-30 05:45:44,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277559845] [2023-08-30 05:45:44,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:45:44,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 05:45:44,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:45:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 05:45:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2023-08-30 05:45:44,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 227 [2023-08-30 05:45:44,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 1463 transitions, 22776 flow. Second operand has 27 states, 27 states have (on average 85.77777777777777) internal successors, (2316), 27 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:45:44,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:45:44,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 227 [2023-08-30 05:45:44,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:46:02,219 INFO L130 PetriNetUnfolder]: 23380/39203 cut-off events. [2023-08-30 05:46:02,219 INFO L131 PetriNetUnfolder]: For 793093/793093 co-relation queries the response was YES. [2023-08-30 05:46:03,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274340 conditions, 39203 events. 23380/39203 cut-off events. For 793093/793093 co-relation queries the response was YES. Maximal size of possible extension queue 1460. Compared 313103 event pairs, 1093 based on Foata normal form. 2264/41467 useless extension candidates. Maximal degree in co-relation 274234. Up to 9700 conditions per place. [2023-08-30 05:46:03,206 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 1150 selfloop transitions, 1780 changer transitions 1828/4758 dead transitions. [2023-08-30 05:46:03,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 4758 transitions, 82199 flow [2023-08-30 05:46:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-08-30 05:46:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2023-08-30 05:46:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 10675 transitions. [2023-08-30 05:46:03,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38864819601703865 [2023-08-30 05:46:03,222 INFO L72 ComplementDD]: Start complementDD. Operand 121 states and 10675 transitions. [2023-08-30 05:46:03,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 10675 transitions. [2023-08-30 05:46:03,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:46:03,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 121 states and 10675 transitions. [2023-08-30 05:46:03,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 122 states, 121 states have (on average 88.22314049586777) internal successors, (10675), 121 states have internal predecessors, (10675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:46:03,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 122 states, 122 states have (on average 227.0) internal successors, (27694), 122 states have internal predecessors, (27694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:46:03,273 INFO L81 ComplementDD]: Finished complementDD. Result has 122 states, 122 states have (on average 227.0) internal successors, (27694), 122 states have internal predecessors, (27694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:46:03,273 INFO L175 Difference]: Start difference. First operand has 372 places, 1463 transitions, 22776 flow. Second operand 121 states and 10675 transitions. [2023-08-30 05:46:03,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 4758 transitions, 82199 flow [2023-08-30 05:46:19,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 4758 transitions, 77991 flow, removed 2072 selfloop flow, removed 32 redundant places. [2023-08-30 05:46:19,529 INFO L231 Difference]: Finished difference. Result has 519 places, 2568 transitions, 45186 flow [2023-08-30 05:46:19,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=21376, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=790, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=121, PETRI_FLOW=45186, PETRI_PLACES=519, PETRI_TRANSITIONS=2568} [2023-08-30 05:46:19,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 476 predicate places. [2023-08-30 05:46:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 2568 transitions, 45186 flow [2023-08-30 05:46:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 85.77777777777777) internal successors, (2316), 27 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:46:19,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:46:19,531 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:46:19,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 05:46:19,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 05:46:19,731 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:46:19,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:46:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash 246720839, now seen corresponding path program 7 times [2023-08-30 05:46:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:46:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103094914] [2023-08-30 05:46:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:46:19,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:46:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:46:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:46:20,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:46:20,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103094914] [2023-08-30 05:46:20,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103094914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:46:20,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308056219] [2023-08-30 05:46:20,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:46:20,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:46:20,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:46:20,290 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:46:20,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 05:46:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:46:20,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 05:46:20,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:46:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:46:20,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:46:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:46:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308056219] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:46:20,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:46:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 29 [2023-08-30 05:46:20,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962244145] [2023-08-30 05:46:20,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:46:20,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:46:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:46:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:46:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:46:21,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 227 [2023-08-30 05:46:21,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 2568 transitions, 45186 flow. Second operand has 30 states, 30 states have (on average 84.5) internal successors, (2535), 30 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:46:21,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:46:21,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 227 [2023-08-30 05:46:21,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:47:04,872 INFO L130 PetriNetUnfolder]: 33654/56759 cut-off events. [2023-08-30 05:47:04,873 INFO L131 PetriNetUnfolder]: For 5729302/5729302 co-relation queries the response was YES. [2023-08-30 05:47:07,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548978 conditions, 56759 events. 33654/56759 cut-off events. For 5729302/5729302 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 478429 event pairs, 1237 based on Foata normal form. 2592/59351 useless extension candidates. Maximal degree in co-relation 548797. Up to 14428 conditions per place. [2023-08-30 05:47:08,025 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 1300 selfloop transitions, 3278 changer transitions 1913/6491 dead transitions. [2023-08-30 05:47:08,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 6491 transitions, 130318 flow [2023-08-30 05:47:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2023-08-30 05:47:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2023-08-30 05:47:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 15405 transitions. [2023-08-30 05:47:08,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38779106356198867 [2023-08-30 05:47:08,061 INFO L72 ComplementDD]: Start complementDD. Operand 175 states and 15405 transitions. [2023-08-30 05:47:08,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 15405 transitions. [2023-08-30 05:47:08,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:47:08,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 175 states and 15405 transitions. [2023-08-30 05:47:08,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 176 states, 175 states have (on average 88.02857142857142) internal successors, (15405), 175 states have internal predecessors, (15405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:47:08,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 176 states, 176 states have (on average 227.0) internal successors, (39952), 176 states have internal predecessors, (39952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:47:08,111 INFO L81 ComplementDD]: Finished complementDD. Result has 176 states, 176 states have (on average 227.0) internal successors, (39952), 176 states have internal predecessors, (39952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:47:08,111 INFO L175 Difference]: Start difference. First operand has 519 places, 2568 transitions, 45186 flow. Second operand 175 states and 15405 transitions. [2023-08-30 05:47:08,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 6491 transitions, 130318 flow [2023-08-30 05:48:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 6491 transitions, 114590 flow, removed 6210 selfloop flow, removed 83 redundant places. [2023-08-30 05:48:34,347 INFO L231 Difference]: Finished difference. Result has 633 places, 4160 transitions, 79305 flow [2023-08-30 05:48:34,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=42309, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1799, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=175, PETRI_FLOW=79305, PETRI_PLACES=633, PETRI_TRANSITIONS=4160} [2023-08-30 05:48:34,350 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 590 predicate places. [2023-08-30 05:48:34,350 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 4160 transitions, 79305 flow [2023-08-30 05:48:34,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 84.5) internal successors, (2535), 30 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:34,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:34,351 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:34,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 05:48:34,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:34,553 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:34,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash 605819233, now seen corresponding path program 8 times [2023-08-30 05:48:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:34,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598023647] [2023-08-30 05:48:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:35,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598023647] [2023-08-30 05:48:35,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598023647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:35,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702054240] [2023-08-30 05:48:35,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:48:35,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:35,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:35,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:35,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 05:48:35,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:48:35,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:35,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 05:48:35,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:35,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:48:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702054240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:36,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 28 [2023-08-30 05:48:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742049906] [2023-08-30 05:48:36,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:36,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 05:48:36,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 05:48:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2023-08-30 05:48:36,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 227 [2023-08-30 05:48:36,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 4160 transitions, 79305 flow. Second operand has 29 states, 29 states have (on average 84.62068965517241) internal successors, (2454), 29 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:36,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:36,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 227 [2023-08-30 05:48:36,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:50:19,448 INFO L130 PetriNetUnfolder]: 53345/89756 cut-off events. [2023-08-30 05:50:19,449 INFO L131 PetriNetUnfolder]: For 24967420/24967420 co-relation queries the response was YES. [2023-08-30 05:50:25,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946049 conditions, 89756 events. 53345/89756 cut-off events. For 24967420/24967420 co-relation queries the response was YES. Maximal size of possible extension queue 3184. Compared 804453 event pairs, 1806 based on Foata normal form. 5814/95570 useless extension candidates. Maximal degree in co-relation 945836. Up to 21312 conditions per place. [2023-08-30 05:50:26,103 INFO L137 encePairwiseOnDemand]: 216/227 looper letters, 1855 selfloop transitions, 5406 changer transitions 3664/10925 dead transitions. [2023-08-30 05:50:26,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 10925 transitions, 233295 flow [2023-08-30 05:50:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2023-08-30 05:50:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2023-08-30 05:50:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 16352 transitions. [2023-08-30 05:50:26,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38521519941576954 [2023-08-30 05:50:26,118 INFO L72 ComplementDD]: Start complementDD. Operand 187 states and 16352 transitions. [2023-08-30 05:50:26,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 16352 transitions. [2023-08-30 05:50:26,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:50:26,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 187 states and 16352 transitions. [2023-08-30 05:50:26,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 188 states, 187 states have (on average 87.44385026737967) internal successors, (16352), 187 states have internal predecessors, (16352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:26,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 188 states, 188 states have (on average 227.0) internal successors, (42676), 188 states have internal predecessors, (42676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:26,171 INFO L81 ComplementDD]: Finished complementDD. Result has 188 states, 188 states have (on average 227.0) internal successors, (42676), 188 states have internal predecessors, (42676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:26,171 INFO L175 Difference]: Start difference. First operand has 633 places, 4160 transitions, 79305 flow. Second operand 187 states and 16352 transitions. [2023-08-30 05:50:26,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 10925 transitions, 233295 flow [2023-08-30 05:56:43,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 10925 transitions, 219589 flow, removed 6694 selfloop flow, removed 76 redundant places. [2023-08-30 05:56:43,440 INFO L231 Difference]: Finished difference. Result has 807 places, 6806 transitions, 141375 flow [2023-08-30 05:56:43,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=75258, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2799, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=187, PETRI_FLOW=141375, PETRI_PLACES=807, PETRI_TRANSITIONS=6806} [2023-08-30 05:56:43,443 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 764 predicate places. [2023-08-30 05:56:43,444 INFO L495 AbstractCegarLoop]: Abstraction has has 807 places, 6806 transitions, 141375 flow [2023-08-30 05:56:43,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 84.62068965517241) internal successors, (2454), 29 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:56:43,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:56:43,444 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:56:43,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 05:56:43,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 05:56:43,650 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:56:43,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:56:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2096764027, now seen corresponding path program 9 times [2023-08-30 05:56:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:56:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855407614] [2023-08-30 05:56:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:56:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:56:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:56:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:56:44,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:56:44,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855407614] [2023-08-30 05:56:44,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855407614] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:56:44,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363736604] [2023-08-30 05:56:44,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:56:44,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:56:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:56:44,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:56:44,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 05:56:44,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 05:56:44,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:56:44,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:56:44,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:56:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:56:44,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:56:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:56:44,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363736604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:56:44,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:56:44,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 29 [2023-08-30 05:56:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709694153] [2023-08-30 05:56:44,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:56:44,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:56:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:56:44,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:56:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:56:45,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-08-30 05:56:45,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 6806 transitions, 141375 flow. Second operand has 30 states, 30 states have (on average 88.36666666666666) internal successors, (2651), 30 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:56:45,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:56:45,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-08-30 05:56:45,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15