./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3.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 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:48:10,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:48:10,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:48:10,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:48:10,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:48:10,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:48:10,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:48:10,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:48:10,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:48:10,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:48:10,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:48:10,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:48:10,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:48:10,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:48:10,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:48:10,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:48:10,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:48:10,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:48:10,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:48:10,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:48:10,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:48:10,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:48:10,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:48:10,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:48:10,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:48:10,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:48:10,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:48:10,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:48:10,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:48:10,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:48:10,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:48:10,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:48:10,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:48:10,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:48:10,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:48:10,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:48:10,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:48:10,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:48:10,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:48:10,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:48:10,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:48:10,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:48:10,888 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:48:10,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:48:10,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:48:10,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:48:10,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:48:10,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:48:10,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:48:10,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:48:10,892 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:48:10,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:48:10,893 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:48:10,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:48:10,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:48:10,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:48:10,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:48:10,894 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:48:10,894 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:48:10,894 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:48:10,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:48:10,895 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:48:10,895 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:48:10,895 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:48:10,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:48:10,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:48:10,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:48:10,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:48:10,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:48:10,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:48:10,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:48:10,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:48:10,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:48:10,897 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:48:10,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:48:10,898 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:48:10,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:48:11,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:48:11,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:48:11,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:48:11,208 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:48:11,209 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:48:11,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-30 04:48:12,427 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:48:12,637 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:48:12,637 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-30 04:48:12,642 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636a39c55/b8c22926335a459b8e50da6d2df31599/FLAG2a0830dea [2023-08-30 04:48:12,654 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636a39c55/b8c22926335a459b8e50da6d2df31599 [2023-08-30 04:48:12,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:48:12,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:48:12,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:48:12,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:48:12,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:48:12,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:12,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae6bf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12, skipping insertion in model container [2023-08-30 04:48:12,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:12,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:48:12,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:48:12,881 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2023-08-30 04:48:12,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:48:12,902 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:48:12,940 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2023-08-30 04:48:12,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:48:12,961 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:48:12,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12 WrapperNode [2023-08-30 04:48:12,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:48:12,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:48:12,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:48:12,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:48:12,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:12,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,020 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-08-30 04:48:13,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:48:13,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:48:13,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:48:13,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:48:13,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:48:13,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:48:13,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:48:13,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:48:13,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (1/1) ... [2023-08-30 04:48:13,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:48:13,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:48:13,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 04:48:13,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 04:48:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:48:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 04:48:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 04:48:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 04:48:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 04:48:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 04:48:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 04:48:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 04:48:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 04:48:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:48:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 04:48:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 04:48:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-30 04:48:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-30 04:48:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:48:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:48:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:48:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:48:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 04:48:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:48:13,191 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:48:13,353 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:48:13,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:48:13,610 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:48:13,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:48:13,633 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 04:48:13,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:48:13 BoogieIcfgContainer [2023-08-30 04:48:13,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:48:13,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:48:13,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:48:13,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:48:13,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:48:12" (1/3) ... [2023-08-30 04:48:13,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b105212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:48:13, skipping insertion in model container [2023-08-30 04:48:13,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:48:12" (2/3) ... [2023-08-30 04:48:13,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b105212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:48:13, skipping insertion in model container [2023-08-30 04:48:13,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:48:13" (3/3) ... [2023-08-30 04:48:13,642 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-08-30 04:48:13,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:48:13,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 04:48:13,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:48:13,824 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-30 04:48:13,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 197 transitions, 442 flow [2023-08-30 04:48:13,972 INFO L130 PetriNetUnfolder]: 14/191 cut-off events. [2023-08-30 04:48:13,972 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 04:48:13,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 191 events. 14/191 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-08-30 04:48:13,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 197 transitions, 442 flow [2023-08-30 04:48:13,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 187 transitions, 410 flow [2023-08-30 04:48:13,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:48:13,998 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 187 transitions, 410 flow [2023-08-30 04:48:14,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 187 transitions, 410 flow [2023-08-30 04:48:14,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 187 transitions, 410 flow [2023-08-30 04:48:14,073 INFO L130 PetriNetUnfolder]: 14/187 cut-off events. [2023-08-30 04:48:14,074 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 04:48:14,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 187 events. 14/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-08-30 04:48:14,082 INFO L119 LiptonReduction]: Number of co-enabled transitions 3780 [2023-08-30 04:48:21,141 INFO L134 LiptonReduction]: Checked pairs total: 4791 [2023-08-30 04:48:21,142 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-30 04:48:21,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:48:21,162 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;@7182ed68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:48:21,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-30 04:48:21,164 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:48:21,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:48:21,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:21,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:48:21,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:21,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 702, now seen corresponding path program 1 times [2023-08-30 04:48:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:21,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214013859] [2023-08-30 04:48:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:21,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:21,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214013859] [2023-08-30 04:48:21,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214013859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:21,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:21,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:48:21,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222127443] [2023-08-30 04:48:21,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:48:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:21,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:48:21,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:48:21,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 375 [2023-08-30 04:48:21,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:21,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:21,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 375 [2023-08-30 04:48:21,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:21,713 INFO L130 PetriNetUnfolder]: 3537/4292 cut-off events. [2023-08-30 04:48:21,713 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2023-08-30 04:48:21,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 4292 events. 3537/4292 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11039 event pairs, 1737 based on Foata normal form. 0/2116 useless extension candidates. Maximal degree in co-relation 6140. Up to 4293 conditions per place. [2023-08-30 04:48:21,740 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 59 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-08-30 04:48:21,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 272 flow [2023-08-30 04:48:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:48:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:48:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 414 transitions. [2023-08-30 04:48:21,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2023-08-30 04:48:21,762 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 414 transitions. [2023-08-30 04:48:21,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 414 transitions. [2023-08-30 04:48:21,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:21,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 414 transitions. [2023-08-30 04:48:21,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 207.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:21,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:21,777 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:21,778 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 160 flow. Second operand 2 states and 414 transitions. [2023-08-30 04:48:21,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 272 flow [2023-08-30 04:48:21,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 248 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 04:48:21,791 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 130 flow [2023-08-30 04:48:21,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-30 04:48:21,797 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 04:48:21,797 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 130 flow [2023-08-30 04:48:21,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:21,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:21,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:48:21,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:48:21,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:21,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash 689090, now seen corresponding path program 1 times [2023-08-30 04:48:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:21,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722779255] [2023-08-30 04:48:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:21,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:22,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722779255] [2023-08-30 04:48:22,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722779255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:22,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:22,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797679696] [2023-08-30 04:48:22,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:22,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:22,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:22,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:22,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:22,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:48:22,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:22,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:22,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:48:22,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:22,728 INFO L130 PetriNetUnfolder]: 3375/4096 cut-off events. [2023-08-30 04:48:22,729 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:22,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 4096 events. 3375/4096 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10445 event pairs, 1656 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 8255. Up to 4096 conditions per place. [2023-08-30 04:48:22,748 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 04:48:22,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 240 flow [2023-08-30 04:48:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-08-30 04:48:22,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084444444444445 [2023-08-30 04:48:22,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-08-30 04:48:22,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-08-30 04:48:22,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:22,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-08-30 04:48:22,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:22,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:22,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:22,757 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 130 flow. Second operand 3 states and 572 transitions. [2023-08-30 04:48:22,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 240 flow [2023-08-30 04:48:22,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:48:22,759 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 128 flow [2023-08-30 04:48:22,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 04:48:22,760 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 04:48:22,760 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 128 flow [2023-08-30 04:48:22,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:22,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:22,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 04:48:22,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:48:22,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:22,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash 689091, now seen corresponding path program 1 times [2023-08-30 04:48:22,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:22,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995934825] [2023-08-30 04:48:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:23,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:23,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995934825] [2023-08-30 04:48:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995934825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81244951] [2023-08-30 04:48:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:23,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:48:23,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:23,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:48:23,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:23,346 INFO L130 PetriNetUnfolder]: 3213/3900 cut-off events. [2023-08-30 04:48:23,346 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:23,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3900 events. 3213/3900 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9865 event pairs, 1575 based on Foata normal form. 0/1954 useless extension candidates. Maximal degree in co-relation 7864. Up to 3900 conditions per place. [2023-08-30 04:48:23,366 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 54 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 04:48:23,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2023-08-30 04:48:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-08-30 04:48:23,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48533333333333334 [2023-08-30 04:48:23,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-08-30 04:48:23,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-08-30 04:48:23,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:23,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-08-30 04:48:23,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,373 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 128 flow. Second operand 3 states and 546 transitions. [2023-08-30 04:48:23,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2023-08-30 04:48:23,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:23,375 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 125 flow [2023-08-30 04:48:23,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-30 04:48:23,376 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -15 predicate places. [2023-08-30 04:48:23,376 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 125 flow [2023-08-30 04:48:23,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:23,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:48:23,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 04:48:23,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:23,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash 662230138, now seen corresponding path program 1 times [2023-08-30 04:48:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:23,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956028582] [2023-08-30 04:48:23,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:23,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:23,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956028582] [2023-08-30 04:48:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956028582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:23,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:23,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:23,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644194629] [2023-08-30 04:48:23,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:23,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:48:23,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:23,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:48:23,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:23,940 INFO L130 PetriNetUnfolder]: 3141/3808 cut-off events. [2023-08-30 04:48:23,940 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:23,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 3808 events. 3141/3808 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9580 event pairs, 1539 based on Foata normal form. 0/1918 useless extension candidates. Maximal degree in co-relation 7681. Up to 3808 conditions per place. [2023-08-30 04:48:23,955 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-30 04:48:23,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 227 flow [2023-08-30 04:48:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:23,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-08-30 04:48:23,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355555555555557 [2023-08-30 04:48:23,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-08-30 04:48:23,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-08-30 04:48:23,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:23,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-08-30 04:48:23,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,963 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 125 flow. Second operand 3 states and 544 transitions. [2023-08-30 04:48:23,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 227 flow [2023-08-30 04:48:23,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:23,965 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 122 flow [2023-08-30 04:48:23,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-08-30 04:48:23,966 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-08-30 04:48:23,966 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 122 flow [2023-08-30 04:48:23,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:23,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:23,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:48:23,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 04:48:23,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:23,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 662230136, now seen corresponding path program 1 times [2023-08-30 04:48:23,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198771691] [2023-08-30 04:48:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:23,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198771691] [2023-08-30 04:48:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198771691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426894098] [2023-08-30 04:48:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:24,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:48:24,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:24,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:48:24,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:24,442 INFO L130 PetriNetUnfolder]: 3069/3716 cut-off events. [2023-08-30 04:48:24,443 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:24,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 3716 events. 3069/3716 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9294 event pairs, 1503 based on Foata normal form. 0/1882 useless extension candidates. Maximal degree in co-relation 7498. Up to 3716 conditions per place. [2023-08-30 04:48:24,459 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 04:48:24,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 220 flow [2023-08-30 04:48:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-30 04:48:24,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031111111111111 [2023-08-30 04:48:24,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-30 04:48:24,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-30 04:48:24,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:24,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-30 04:48:24,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,467 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 122 flow. Second operand 3 states and 566 transitions. [2023-08-30 04:48:24,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 220 flow [2023-08-30 04:48:24,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:24,469 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2023-08-30 04:48:24,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-30 04:48:24,470 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-08-30 04:48:24,470 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2023-08-30 04:48:24,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:24,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 04:48:24,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:24,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash 748017327, now seen corresponding path program 1 times [2023-08-30 04:48:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:24,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201728199] [2023-08-30 04:48:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:24,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:24,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201728199] [2023-08-30 04:48:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201728199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111471601] [2023-08-30 04:48:24,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:24,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:48:24,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:24,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:48:24,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:24,978 INFO L130 PetriNetUnfolder]: 3021/3652 cut-off events. [2023-08-30 04:48:24,978 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:24,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 3652 events. 3021/3652 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9119 event pairs, 1479 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 7371. Up to 3652 conditions per place. [2023-08-30 04:48:24,991 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 04:48:24,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 213 flow [2023-08-30 04:48:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-08-30 04:48:24,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013333333333333 [2023-08-30 04:48:24,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-08-30 04:48:24,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-08-30 04:48:24,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:24,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-08-30 04:48:24,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:24,998 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 119 flow. Second operand 3 states and 564 transitions. [2023-08-30 04:48:24,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 213 flow [2023-08-30 04:48:24,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:25,000 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 116 flow [2023-08-30 04:48:25,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-30 04:48:25,001 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -18 predicate places. [2023-08-30 04:48:25,001 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 116 flow [2023-08-30 04:48:25,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:25,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:25,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 04:48:25,002 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:25,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:25,003 INFO L85 PathProgramCache]: Analyzing trace with hash 748017328, now seen corresponding path program 1 times [2023-08-30 04:48:25,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:25,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062549817] [2023-08-30 04:48:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:25,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:25,165 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 04:48:25,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:25,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062549817] [2023-08-30 04:48:25,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062549817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:25,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:25,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:25,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038671660] [2023-08-30 04:48:25,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:25,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:25,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:48:25,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:25,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:48:25,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:25,434 INFO L130 PetriNetUnfolder]: 2973/3588 cut-off events. [2023-08-30 04:48:25,434 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:25,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 3588 events. 2973/3588 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8926 event pairs, 1455 based on Foata normal form. 0/1834 useless extension candidates. Maximal degree in co-relation 7244. Up to 3588 conditions per place. [2023-08-30 04:48:25,449 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 04:48:25,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 206 flow [2023-08-30 04:48:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-30 04:48:25,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782222222222222 [2023-08-30 04:48:25,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-30 04:48:25,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-30 04:48:25,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:25,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-30 04:48:25,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,514 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 116 flow. Second operand 3 states and 538 transitions. [2023-08-30 04:48:25,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 206 flow [2023-08-30 04:48:25,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:25,515 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 113 flow [2023-08-30 04:48:25,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-08-30 04:48:25,515 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-08-30 04:48:25,516 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 113 flow [2023-08-30 04:48:25,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:25,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:25,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 04:48:25,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:25,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1585127522, now seen corresponding path program 1 times [2023-08-30 04:48:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880918343] [2023-08-30 04:48:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:25,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:25,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880918343] [2023-08-30 04:48:25,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880918343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:25,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:25,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421931653] [2023-08-30 04:48:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:25,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:25,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:48:25,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:25,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:48:25,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:25,840 INFO L130 PetriNetUnfolder]: 2901/3496 cut-off events. [2023-08-30 04:48:25,841 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:25,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 3496 events. 2901/3496 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8666 event pairs, 1419 based on Foata normal form. 0/1798 useless extension candidates. Maximal degree in co-relation 7061. Up to 3496 conditions per place. [2023-08-30 04:48:25,856 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 44 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 04:48:25,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 199 flow [2023-08-30 04:48:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-30 04:48:25,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47644444444444445 [2023-08-30 04:48:25,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-30 04:48:25,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-30 04:48:25,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:25,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-30 04:48:25,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,863 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 113 flow. Second operand 3 states and 536 transitions. [2023-08-30 04:48:25,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 199 flow [2023-08-30 04:48:25,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:25,864 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 110 flow [2023-08-30 04:48:25,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-08-30 04:48:25,865 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-08-30 04:48:25,865 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 110 flow [2023-08-30 04:48:25,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:25,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:25,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:25,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 04:48:25,866 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:25,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1585127521, now seen corresponding path program 1 times [2023-08-30 04:48:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:25,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178320164] [2023-08-30 04:48:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178320164] [2023-08-30 04:48:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178320164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:26,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638619164] [2023-08-30 04:48:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:26,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:26,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:48:26,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:26,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:48:26,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:26,262 INFO L130 PetriNetUnfolder]: 2829/3404 cut-off events. [2023-08-30 04:48:26,262 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:26,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 3404 events. 2829/3404 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8377 event pairs, 1383 based on Foata normal form. 0/1762 useless extension candidates. Maximal degree in co-relation 6878. Up to 3404 conditions per place. [2023-08-30 04:48:26,277 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 04:48:26,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 192 flow [2023-08-30 04:48:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-30 04:48:26,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496 [2023-08-30 04:48:26,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-30 04:48:26,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-30 04:48:26,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:26,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-30 04:48:26,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,283 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 110 flow. Second operand 3 states and 558 transitions. [2023-08-30 04:48:26,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 192 flow [2023-08-30 04:48:26,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:26,285 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 107 flow [2023-08-30 04:48:26,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-30 04:48:26,286 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-08-30 04:48:26,286 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 107 flow [2023-08-30 04:48:26,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:26,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:26,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 04:48:26,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:26,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1405827802, now seen corresponding path program 1 times [2023-08-30 04:48:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:26,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372579240] [2023-08-30 04:48:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:26,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:26,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372579240] [2023-08-30 04:48:26,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372579240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:26,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:26,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:26,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341326805] [2023-08-30 04:48:26,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:26,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:26,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-08-30 04:48:26,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 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 04:48:26,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:26,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-08-30 04:48:26,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:26,573 INFO L130 PetriNetUnfolder]: 2667/3208 cut-off events. [2023-08-30 04:48:26,574 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:26,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 3208 events. 2667/3208 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7778 event pairs, 1302 based on Foata normal form. 0/1681 useless extension candidates. Maximal degree in co-relation 6487. Up to 3208 conditions per place. [2023-08-30 04:48:26,618 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 04:48:26,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 185 flow [2023-08-30 04:48:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-08-30 04:48:26,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728888888888889 [2023-08-30 04:48:26,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-08-30 04:48:26,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-08-30 04:48:26,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:26,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-08-30 04:48:26,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,625 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 107 flow. Second operand 3 states and 532 transitions. [2023-08-30 04:48:26,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 185 flow [2023-08-30 04:48:26,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:26,626 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 104 flow [2023-08-30 04:48:26,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-30 04:48:26,627 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -22 predicate places. [2023-08-30 04:48:26,627 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 104 flow [2023-08-30 04:48:26,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 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 04:48:26,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:26,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 04:48:26,628 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:26,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1405827801, now seen corresponding path program 1 times [2023-08-30 04:48:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:26,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594836292] [2023-08-30 04:48:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:26,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594836292] [2023-08-30 04:48:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594836292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201160916] [2023-08-30 04:48:26,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:26,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:26,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:26,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-08-30 04:48:26,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:26,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-08-30 04:48:26,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:26,964 INFO L130 PetriNetUnfolder]: 2505/3012 cut-off events. [2023-08-30 04:48:26,965 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:26,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 3012 events. 2505/3012 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7211 event pairs, 1221 based on Foata normal form. 0/1600 useless extension candidates. Maximal degree in co-relation 6096. Up to 3012 conditions per place. [2023-08-30 04:48:26,978 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 04:48:26,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 178 flow [2023-08-30 04:48:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-08-30 04:48:26,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49244444444444446 [2023-08-30 04:48:26,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-08-30 04:48:26,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-08-30 04:48:26,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:26,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-08-30 04:48:26,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,985 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 104 flow. Second operand 3 states and 554 transitions. [2023-08-30 04:48:26,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 178 flow [2023-08-30 04:48:26,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:26,987 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 101 flow [2023-08-30 04:48:26,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-30 04:48:26,988 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-08-30 04:48:26,988 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 101 flow [2023-08-30 04:48:26,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:26,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:26,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 04:48:26,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:26,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1914195271, now seen corresponding path program 1 times [2023-08-30 04:48:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540000019] [2023-08-30 04:48:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:27,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:27,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540000019] [2023-08-30 04:48:27,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540000019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:27,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:27,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 04:48:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715549775] [2023-08-30 04:48:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:27,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 04:48:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 04:48:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 04:48:27,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 375 [2023-08-30 04:48:27,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 150.85714285714286) internal successors, (1056), 7 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:27,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:27,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 375 [2023-08-30 04:48:27,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:28,150 INFO L130 PetriNetUnfolder]: 2121/2564 cut-off events. [2023-08-30 04:48:28,150 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:28,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5205 conditions, 2564 events. 2121/2564 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5934 event pairs, 1029 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 5201. Up to 2564 conditions per place. [2023-08-30 04:48:28,161 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 04:48:28,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 38 transitions, 175 flow [2023-08-30 04:48:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 04:48:28,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432 [2023-08-30 04:48:28,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 04:48:28,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 04:48:28,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:28,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 04:48:28,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,169 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 101 flow. Second operand 3 states and 486 transitions. [2023-08-30 04:48:28,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 38 transitions, 175 flow [2023-08-30 04:48:28,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:28,170 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 100 flow [2023-08-30 04:48:28,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-08-30 04:48:28,171 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-08-30 04:48:28,171 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 100 flow [2023-08-30 04:48:28,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.85714285714286) internal successors, (1056), 7 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:28,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:28,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 04:48:28,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:28,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1914195270, now seen corresponding path program 1 times [2023-08-30 04:48:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695052926] [2023-08-30 04:48:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:28,347 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 04:48:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695052926] [2023-08-30 04:48:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695052926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:28,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 04:48:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805944151] [2023-08-30 04:48:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 04:48:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 04:48:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 04:48:28,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 375 [2023-08-30 04:48:28,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 100 flow. Second operand has 8 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:28,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 375 [2023-08-30 04:48:28,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:28,705 INFO L130 PetriNetUnfolder]: 1737/2116 cut-off events. [2023-08-30 04:48:28,706 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:28,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4310 conditions, 2116 events. 1737/2116 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4759 event pairs, 837 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 4306. Up to 2116 conditions per place. [2023-08-30 04:48:28,714 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 04:48:28,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 172 flow [2023-08-30 04:48:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:28,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-30 04:48:28,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151111111111111 [2023-08-30 04:48:28,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-30 04:48:28,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-30 04:48:28,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:28,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-30 04:48:28,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,720 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 100 flow. Second operand 3 states and 467 transitions. [2023-08-30 04:48:28,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 172 flow [2023-08-30 04:48:28,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:28,721 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 99 flow [2023-08-30 04:48:28,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-30 04:48:28,723 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-08-30 04:48:28,723 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 99 flow [2023-08-30 04:48:28,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:28,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:28,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 04:48:28,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:28,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1925165654, now seen corresponding path program 1 times [2023-08-30 04:48:28,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78064043] [2023-08-30 04:48:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:28,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:29,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:29,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78064043] [2023-08-30 04:48:29,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78064043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:29,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:29,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:48:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701884408] [2023-08-30 04:48:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:29,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:48:29,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:48:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:48:29,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 375 [2023-08-30 04:48:29,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:29,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:29,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 375 [2023-08-30 04:48:29,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:29,421 INFO L130 PetriNetUnfolder]: 3473/4229 cut-off events. [2023-08-30 04:48:29,422 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 04:48:29,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 4229 events. 3473/4229 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11643 event pairs, 837 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 8595. Up to 3015 conditions per place. [2023-08-30 04:48:29,440 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 63 selfloop transitions, 7 changer transitions 1/71 dead transitions. [2023-08-30 04:48:29,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 320 flow [2023-08-30 04:48:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:48:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:48:29,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-08-30 04:48:29,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48533333333333334 [2023-08-30 04:48:29,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-08-30 04:48:29,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-08-30 04:48:29,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:29,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-08-30 04:48:29,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:29,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:29,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:29,448 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 99 flow. Second operand 3 states and 546 transitions. [2023-08-30 04:48:29,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 320 flow [2023-08-30 04:48:29,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:29,450 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 145 flow [2023-08-30 04:48:29,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-30 04:48:29,451 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-08-30 04:48:29,451 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 145 flow [2023-08-30 04:48:29,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:29,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:29,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:29,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 04:48:29,453 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:29,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:29,454 INFO L85 PathProgramCache]: Analyzing trace with hash 239588318, now seen corresponding path program 1 times [2023-08-30 04:48:29,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:29,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411567919] [2023-08-30 04:48:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:29,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:29,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:29,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411567919] [2023-08-30 04:48:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411567919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:29,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:29,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:29,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701889237] [2023-08-30 04:48:29,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:29,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:29,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:29,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:29,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:29,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:29,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:29,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:29,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:30,254 INFO L130 PetriNetUnfolder]: 5067/6189 cut-off events. [2023-08-30 04:48:30,254 INFO L131 PetriNetUnfolder]: For 2240/2240 co-relation queries the response was YES. [2023-08-30 04:48:30,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15985 conditions, 6189 events. 5067/6189 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19210 event pairs, 259 based on Foata normal form. 122/6311 useless extension candidates. Maximal degree in co-relation 15980. Up to 3157 conditions per place. [2023-08-30 04:48:30,283 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 116 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2023-08-30 04:48:30,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 126 transitions, 633 flow [2023-08-30 04:48:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 936 transitions. [2023-08-30 04:48:30,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992 [2023-08-30 04:48:30,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 936 transitions. [2023-08-30 04:48:30,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 936 transitions. [2023-08-30 04:48:30,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:30,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 936 transitions. [2023-08-30 04:48:30,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:30,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:30,293 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:30,293 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 145 flow. Second operand 5 states and 936 transitions. [2023-08-30 04:48:30,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 126 transitions, 633 flow [2023-08-30 04:48:30,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 126 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:30,298 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 203 flow [2023-08-30 04:48:30,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-30 04:48:30,299 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-08-30 04:48:30,299 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 203 flow [2023-08-30 04:48:30,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:30,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:30,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:30,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 04:48:30,300 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:30,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1889108753, now seen corresponding path program 1 times [2023-08-30 04:48:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042829171] [2023-08-30 04:48:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:30,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042829171] [2023-08-30 04:48:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042829171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:30,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:30,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:30,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99628283] [2023-08-30 04:48:30,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:30,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:30,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:30,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:30,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:30,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:30,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:31,031 INFO L130 PetriNetUnfolder]: 4881/6003 cut-off events. [2023-08-30 04:48:31,031 INFO L131 PetriNetUnfolder]: For 4584/4584 co-relation queries the response was YES. [2023-08-30 04:48:31,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 6003 events. 4881/6003 cut-off events. For 4584/4584 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18836 event pairs, 259 based on Foata normal form. 186/6189 useless extension candidates. Maximal degree in co-relation 16723. Up to 3157 conditions per place. [2023-08-30 04:48:31,114 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 116 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2023-08-30 04:48:31,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 654 flow [2023-08-30 04:48:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 935 transitions. [2023-08-30 04:48:31,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49866666666666665 [2023-08-30 04:48:31,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 935 transitions. [2023-08-30 04:48:31,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 935 transitions. [2023-08-30 04:48:31,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:31,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 935 transitions. [2023-08-30 04:48:31,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:31,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:31,124 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:31,124 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 203 flow. Second operand 5 states and 935 transitions. [2023-08-30 04:48:31,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 124 transitions, 654 flow [2023-08-30 04:48:31,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:48:31,133 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 217 flow [2023-08-30 04:48:31,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2023-08-30 04:48:31,134 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-08-30 04:48:31,134 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 217 flow [2023-08-30 04:48:31,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:31,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:31,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:31,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 04:48:31,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:31,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:31,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2041789992, now seen corresponding path program 2 times [2023-08-30 04:48:31,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299438150] [2023-08-30 04:48:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:31,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:31,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299438150] [2023-08-30 04:48:31,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299438150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:48:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033026190] [2023-08-30 04:48:31,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:48:31,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:48:31,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:48:31,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:48:31,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 04:48:31,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 04:48:31,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:48:31,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:48:31,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:48:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:31,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:48:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033026190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:48:31,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:48:31,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 04:48:31,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152246828] [2023-08-30 04:48:31,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:48:31,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:48:31,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:31,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:48:31,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:48:31,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:31,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:31,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:31,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:31,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:32,570 INFO L130 PetriNetUnfolder]: 5649/6927 cut-off events. [2023-08-30 04:48:32,570 INFO L131 PetriNetUnfolder]: For 8468/8468 co-relation queries the response was YES. [2023-08-30 04:48:32,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20577 conditions, 6927 events. 5649/6927 cut-off events. For 8468/8468 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 21185 event pairs, 1803 based on Foata normal form. 156/7083 useless extension candidates. Maximal degree in co-relation 20569. Up to 3643 conditions per place. [2023-08-30 04:48:32,613 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 114 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2023-08-30 04:48:32,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 122 transitions, 674 flow [2023-08-30 04:48:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 936 transitions. [2023-08-30 04:48:32,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992 [2023-08-30 04:48:32,616 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 936 transitions. [2023-08-30 04:48:32,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 936 transitions. [2023-08-30 04:48:32,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:32,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 936 transitions. [2023-08-30 04:48:32,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:32,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:32,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:32,622 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 217 flow. Second operand 5 states and 936 transitions. [2023-08-30 04:48:32,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 122 transitions, 674 flow [2023-08-30 04:48:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 122 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:32,629 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 260 flow [2023-08-30 04:48:32,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-08-30 04:48:32,630 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-08-30 04:48:32,630 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 260 flow [2023-08-30 04:48:32,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:32,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:32,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:32,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 04:48:32,837 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,SelfDestructingSolverStorable16 [2023-08-30 04:48:32,838 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:32,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -531288503, now seen corresponding path program 1 times [2023-08-30 04:48:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:32,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486422186] [2023-08-30 04:48:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:33,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:33,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486422186] [2023-08-30 04:48:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486422186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:48:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571684376] [2023-08-30 04:48:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:48:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:48:33,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:48:33,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 04:48:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:33,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:48:33,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:48:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:33,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:48:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571684376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:48:33,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:48:33,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 04:48:33,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099888971] [2023-08-30 04:48:33,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:48:33,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:48:33,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:48:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:48:33,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:33,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:33,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:33,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:33,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:34,935 INFO L130 PetriNetUnfolder]: 13057/16015 cut-off events. [2023-08-30 04:48:34,936 INFO L131 PetriNetUnfolder]: For 28097/28097 co-relation queries the response was YES. [2023-08-30 04:48:34,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51310 conditions, 16015 events. 13057/16015 cut-off events. For 28097/28097 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 57620 event pairs, 2873 based on Foata normal form. 408/16423 useless extension candidates. Maximal degree in co-relation 51299. Up to 6947 conditions per place. [2023-08-30 04:48:35,040 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 150 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2023-08-30 04:48:35,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 158 transitions, 1094 flow [2023-08-30 04:48:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 938 transitions. [2023-08-30 04:48:35,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002666666666666 [2023-08-30 04:48:35,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 938 transitions. [2023-08-30 04:48:35,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 938 transitions. [2023-08-30 04:48:35,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:35,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 938 transitions. [2023-08-30 04:48:35,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:35,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:35,050 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:35,050 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 260 flow. Second operand 5 states and 938 transitions. [2023-08-30 04:48:35,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 158 transitions, 1094 flow [2023-08-30 04:48:35,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 158 transitions, 1067 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:35,073 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 306 flow [2023-08-30 04:48:35,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2023-08-30 04:48:35,074 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-08-30 04:48:35,074 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 306 flow [2023-08-30 04:48:35,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:35,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:35,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:35,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 04:48:35,287 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,SelfDestructingSolverStorable17 [2023-08-30 04:48:35,288 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:35,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1330698981, now seen corresponding path program 2 times [2023-08-30 04:48:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288256950] [2023-08-30 04:48:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:35,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:35,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288256950] [2023-08-30 04:48:35,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288256950] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:35,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:35,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881245667] [2023-08-30 04:48:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:35,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:35,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:35,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:35,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:35,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:35,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:35,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:36,689 INFO L130 PetriNetUnfolder]: 11213/13735 cut-off events. [2023-08-30 04:48:36,690 INFO L131 PetriNetUnfolder]: For 26985/26985 co-relation queries the response was YES. [2023-08-30 04:48:36,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50244 conditions, 13735 events. 11213/13735 cut-off events. For 26985/26985 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49284 event pairs, 471 based on Foata normal form. 268/14003 useless extension candidates. Maximal degree in co-relation 50229. Up to 5849 conditions per place. [2023-08-30 04:48:36,779 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 150 selfloop transitions, 11 changer transitions 0/161 dead transitions. [2023-08-30 04:48:36,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 161 transitions, 1160 flow [2023-08-30 04:48:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2023-08-30 04:48:36,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49706666666666666 [2023-08-30 04:48:36,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2023-08-30 04:48:36,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2023-08-30 04:48:36,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:36,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2023-08-30 04:48:36,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:36,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:36,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:36,789 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 306 flow. Second operand 5 states and 932 transitions. [2023-08-30 04:48:36,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 161 transitions, 1160 flow [2023-08-30 04:48:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 161 transitions, 1160 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:48:36,859 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 367 flow [2023-08-30 04:48:36,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-08-30 04:48:36,860 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-30 04:48:36,861 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 367 flow [2023-08-30 04:48:36,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:36,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:36,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:36,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 04:48:36,862 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:36,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 101620716, now seen corresponding path program 1 times [2023-08-30 04:48:36,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:36,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235551177] [2023-08-30 04:48:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:37,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:37,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235551177] [2023-08-30 04:48:37,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235551177] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:48:37,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921506931] [2023-08-30 04:48:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:37,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:48:37,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:48:37,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:48:37,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 04:48:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:37,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:48:37,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:48:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:37,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:48:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:37,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921506931] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:48:37,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:48:37,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 04:48:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739028127] [2023-08-30 04:48:37,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:48:37,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:48:37,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:48:37,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:48:37,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:37,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:37,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:37,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:37,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:40,009 INFO L130 PetriNetUnfolder]: 24977/30573 cut-off events. [2023-08-30 04:48:40,009 INFO L131 PetriNetUnfolder]: For 83473/83473 co-relation queries the response was YES. [2023-08-30 04:48:40,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120244 conditions, 30573 events. 24977/30573 cut-off events. For 83473/83473 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 119072 event pairs, 4643 based on Foata normal form. 744/31317 useless extension candidates. Maximal degree in co-relation 120227. Up to 13750 conditions per place. [2023-08-30 04:48:40,269 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 179 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-08-30 04:48:40,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 187 transitions, 1485 flow [2023-08-30 04:48:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 930 transitions. [2023-08-30 04:48:40,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496 [2023-08-30 04:48:40,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 930 transitions. [2023-08-30 04:48:40,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 930 transitions. [2023-08-30 04:48:40,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:40,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 930 transitions. [2023-08-30 04:48:40,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:40,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:40,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:40,279 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 367 flow. Second operand 5 states and 930 transitions. [2023-08-30 04:48:40,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 187 transitions, 1485 flow [2023-08-30 04:48:40,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 187 transitions, 1445 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:40,339 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 409 flow [2023-08-30 04:48:40,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2023-08-30 04:48:40,340 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2023-08-30 04:48:40,340 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 409 flow [2023-08-30 04:48:40,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:40,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:40,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:40,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 04:48:40,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:48:40,548 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:40,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash 177155077, now seen corresponding path program 1 times [2023-08-30 04:48:40,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:40,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807041549] [2023-08-30 04:48:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:40,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:40,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807041549] [2023-08-30 04:48:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807041549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:40,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:40,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546034499] [2023-08-30 04:48:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:40,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:40,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:40,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:40,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:40,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:40,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:40,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:43,125 INFO L130 PetriNetUnfolder]: 24421/30017 cut-off events. [2023-08-30 04:48:43,125 INFO L131 PetriNetUnfolder]: For 83252/83252 co-relation queries the response was YES. [2023-08-30 04:48:43,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129152 conditions, 30017 events. 24421/30017 cut-off events. For 83252/83252 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 123314 event pairs, 1147 based on Foata normal form. 556/30573 useless extension candidates. Maximal degree in co-relation 129131. Up to 13317 conditions per place. [2023-08-30 04:48:43,293 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 171 selfloop transitions, 8 changer transitions 0/179 dead transitions. [2023-08-30 04:48:43,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 179 transitions, 1399 flow [2023-08-30 04:48:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 931 transitions. [2023-08-30 04:48:43,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965333333333333 [2023-08-30 04:48:43,298 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 931 transitions. [2023-08-30 04:48:43,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 931 transitions. [2023-08-30 04:48:43,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:43,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 931 transitions. [2023-08-30 04:48:43,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.2) internal successors, (931), 5 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:43,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:43,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:43,310 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 409 flow. Second operand 5 states and 931 transitions. [2023-08-30 04:48:43,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 179 transitions, 1399 flow [2023-08-30 04:48:43,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 179 transitions, 1399 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:48:43,570 INFO L231 Difference]: Finished difference. Result has 91 places, 66 transitions, 425 flow [2023-08-30 04:48:43,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2023-08-30 04:48:43,571 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2023-08-30 04:48:43,571 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 425 flow [2023-08-30 04:48:43,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:43,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:43,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:43,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 04:48:43,572 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:43,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1816048060, now seen corresponding path program 2 times [2023-08-30 04:48:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:43,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081710969] [2023-08-30 04:48:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:43,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081710969] [2023-08-30 04:48:43,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081710969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:43,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:43,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:43,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371639120] [2023-08-30 04:48:43,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:43,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:43,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:43,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:43,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:43,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:43,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:43,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:45,796 INFO L130 PetriNetUnfolder]: 21381/26225 cut-off events. [2023-08-30 04:48:45,796 INFO L131 PetriNetUnfolder]: For 88092/88092 co-relation queries the response was YES. [2023-08-30 04:48:45,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116759 conditions, 26225 events. 21381/26225 cut-off events. For 88092/88092 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 101291 event pairs, 1383 based on Foata normal form. 368/26593 useless extension candidates. Maximal degree in co-relation 116737. Up to 11386 conditions per place. [2023-08-30 04:48:45,922 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 182 selfloop transitions, 11 changer transitions 0/193 dead transitions. [2023-08-30 04:48:45,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 193 transitions, 1632 flow [2023-08-30 04:48:45,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 928 transitions. [2023-08-30 04:48:45,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49493333333333334 [2023-08-30 04:48:45,929 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 928 transitions. [2023-08-30 04:48:45,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 928 transitions. [2023-08-30 04:48:45,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:45,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 928 transitions. [2023-08-30 04:48:45,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:45,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:45,934 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:45,934 INFO L175 Difference]: Start difference. First operand has 91 places, 66 transitions, 425 flow. Second operand 5 states and 928 transitions. [2023-08-30 04:48:45,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 193 transitions, 1632 flow [2023-08-30 04:48:46,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 193 transitions, 1595 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:46,180 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 475 flow [2023-08-30 04:48:46,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=475, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2023-08-30 04:48:46,180 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2023-08-30 04:48:46,181 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 475 flow [2023-08-30 04:48:46,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:46,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:46,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:46,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 04:48:46,181 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:46,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:46,182 INFO L85 PathProgramCache]: Analyzing trace with hash 403887824, now seen corresponding path program 1 times [2023-08-30 04:48:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470197689] [2023-08-30 04:48:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:46,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:46,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:46,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470197689] [2023-08-30 04:48:46,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470197689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:46,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:46,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053266347] [2023-08-30 04:48:46,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:46,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:46,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:46,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:46,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:46,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:46,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:46,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:48,438 INFO L130 PetriNetUnfolder]: 21005/25849 cut-off events. [2023-08-30 04:48:48,438 INFO L131 PetriNetUnfolder]: For 84905/84905 co-relation queries the response was YES. [2023-08-30 04:48:48,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120017 conditions, 25849 events. 21005/25849 cut-off events. For 84905/84905 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 101379 event pairs, 1383 based on Foata normal form. 376/26225 useless extension candidates. Maximal degree in co-relation 119993. Up to 11497 conditions per place. [2023-08-30 04:48:48,832 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 183 selfloop transitions, 8 changer transitions 0/191 dead transitions. [2023-08-30 04:48:48,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 191 transitions, 1608 flow [2023-08-30 04:48:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2023-08-30 04:48:48,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944 [2023-08-30 04:48:48,835 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2023-08-30 04:48:48,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2023-08-30 04:48:48,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:48,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2023-08-30 04:48:48,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:48,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:48,841 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:48,841 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 475 flow. Second operand 5 states and 927 transitions. [2023-08-30 04:48:48,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 191 transitions, 1608 flow [2023-08-30 04:48:49,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 191 transitions, 1597 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:49,062 INFO L231 Difference]: Finished difference. Result has 99 places, 70 transitions, 478 flow [2023-08-30 04:48:49,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2023-08-30 04:48:49,063 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2023-08-30 04:48:49,063 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 478 flow [2023-08-30 04:48:49,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:49,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:49,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:49,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 04:48:49,064 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:49,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 986963724, now seen corresponding path program 2 times [2023-08-30 04:48:49,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:49,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366798630] [2023-08-30 04:48:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:49,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366798630] [2023-08-30 04:48:49,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366798630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:49,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:49,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089320099] [2023-08-30 04:48:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:49,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:49,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:49,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:49,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:49,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:49,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:51,472 INFO L130 PetriNetUnfolder]: 24413/29993 cut-off events. [2023-08-30 04:48:51,472 INFO L131 PetriNetUnfolder]: For 100335/100335 co-relation queries the response was YES. [2023-08-30 04:48:51,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141555 conditions, 29993 events. 24413/29993 cut-off events. For 100335/100335 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 116774 event pairs, 4471 based on Foata normal form. 736/30729 useless extension candidates. Maximal degree in co-relation 141530. Up to 16033 conditions per place. [2023-08-30 04:48:51,671 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 177 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2023-08-30 04:48:51,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 185 transitions, 1572 flow [2023-08-30 04:48:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 924 transitions. [2023-08-30 04:48:51,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928 [2023-08-30 04:48:51,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 924 transitions. [2023-08-30 04:48:51,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 924 transitions. [2023-08-30 04:48:51,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:51,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 924 transitions. [2023-08-30 04:48:51,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:51,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:51,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:51,681 INFO L175 Difference]: Start difference. First operand has 99 places, 70 transitions, 478 flow. Second operand 5 states and 924 transitions. [2023-08-30 04:48:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 185 transitions, 1572 flow [2023-08-30 04:48:52,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 185 transitions, 1559 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 04:48:52,049 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 518 flow [2023-08-30 04:48:52,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2023-08-30 04:48:52,050 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2023-08-30 04:48:52,050 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 518 flow [2023-08-30 04:48:52,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:52,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:52,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:52,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 04:48:52,051 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:52,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash 715762403, now seen corresponding path program 2 times [2023-08-30 04:48:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:52,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883147496] [2023-08-30 04:48:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:52,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:52,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883147496] [2023-08-30 04:48:52,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883147496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:48:52,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:48:52,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:48:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489886045] [2023-08-30 04:48:52,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:48:52,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:48:52,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:48:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:48:52,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:52,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:52,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:52,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:52,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:55,017 INFO L130 PetriNetUnfolder]: 29277/35873 cut-off events. [2023-08-30 04:48:55,017 INFO L131 PetriNetUnfolder]: For 127692/127692 co-relation queries the response was YES. [2023-08-30 04:48:55,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174642 conditions, 35873 events. 29277/35873 cut-off events. For 127692/127692 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 145071 event pairs, 5255 based on Foata normal form. 1016/36889 useless extension candidates. Maximal degree in co-relation 174614. Up to 20069 conditions per place. [2023-08-30 04:48:55,496 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 193 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2023-08-30 04:48:55,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 201 transitions, 1784 flow [2023-08-30 04:48:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:48:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:48:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 928 transitions. [2023-08-30 04:48:55,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49493333333333334 [2023-08-30 04:48:55,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 928 transitions. [2023-08-30 04:48:55,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 928 transitions. [2023-08-30 04:48:55,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:48:55,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 928 transitions. [2023-08-30 04:48:55,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:55,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:55,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:55,522 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 518 flow. Second operand 5 states and 928 transitions. [2023-08-30 04:48:55,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 201 transitions, 1784 flow [2023-08-30 04:48:55,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 201 transitions, 1706 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-08-30 04:48:55,872 INFO L231 Difference]: Finished difference. Result has 108 places, 76 transitions, 545 flow [2023-08-30 04:48:55,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=108, PETRI_TRANSITIONS=76} [2023-08-30 04:48:55,873 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2023-08-30 04:48:55,873 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 76 transitions, 545 flow [2023-08-30 04:48:55,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:55,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:48:55,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:48:55,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 04:48:55,873 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:48:55,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:48:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash -26381283, now seen corresponding path program 2 times [2023-08-30 04:48:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:48:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553269889] [2023-08-30 04:48:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:48:55,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:48:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:48:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:48:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553269889] [2023-08-30 04:48:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553269889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:48:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680945609] [2023-08-30 04:48:56,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 04:48:56,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:48:56,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:48:56,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:48:56,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 04:48:56,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 04:48:56,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:48:56,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 04:48:56,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:48:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:56,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:48:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:48:56,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680945609] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:48:56,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 04:48:56,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 04:48:56,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927091833] [2023-08-30 04:48:56,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 04:48:56,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:48:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:48:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:48:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:48:56,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-08-30 04:48:56,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 76 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:48:56,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:48:56,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-08-30 04:48:56,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:48:59,997 INFO L130 PetriNetUnfolder]: 33421/40853 cut-off events. [2023-08-30 04:48:59,997 INFO L131 PetriNetUnfolder]: For 168727/168727 co-relation queries the response was YES. [2023-08-30 04:49:00,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204056 conditions, 40853 events. 33421/40853 cut-off events. For 168727/168727 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 162586 event pairs, 10579 based on Foata normal form. 836/41689 useless extension candidates. Maximal degree in co-relation 204026. Up to 23061 conditions per place. [2023-08-30 04:49:00,271 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 209 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2023-08-30 04:49:00,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 217 transitions, 1917 flow [2023-08-30 04:49:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:49:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:49:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2023-08-30 04:49:00,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49706666666666666 [2023-08-30 04:49:00,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2023-08-30 04:49:00,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2023-08-30 04:49:00,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:49:00,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2023-08-30 04:49:00,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:49:00,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:49:00,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:49:00,278 INFO L175 Difference]: Start difference. First operand has 108 places, 76 transitions, 545 flow. Second operand 5 states and 932 transitions. [2023-08-30 04:49:00,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 217 transitions, 1917 flow [2023-08-30 04:49:00,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 217 transitions, 1839 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-08-30 04:49:00,680 INFO L231 Difference]: Finished difference. Result has 112 places, 79 transitions, 578 flow [2023-08-30 04:49:00,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=112, PETRI_TRANSITIONS=79} [2023-08-30 04:49:00,681 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 37 predicate places. [2023-08-30 04:49:00,681 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 79 transitions, 578 flow [2023-08-30 04:49:00,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:49:00,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:49:00,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:49:00,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 04:49:00,882 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,SelfDestructingSolverStorable25 [2023-08-30 04:49:00,883 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-08-30 04:49:00,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:49:00,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1123184957, now seen corresponding path program 1 times [2023-08-30 04:49:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:49:00,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738499501] [2023-08-30 04:49:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:49:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:49:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:49:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:49:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:49:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738499501] [2023-08-30 04:49:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738499501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 04:49:01,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847066084] [2023-08-30 04:49:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:49:01,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 04:49:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:49:01,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 04:49:01,580 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 04:49:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:49:01,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 04:49:02,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:49:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:49:30,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:52:52,209 WARN L222 SmtUtils]: Spent 3.23m on a formula simplification. DAG size of input: 3055 DAG size of output: 3017 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15