./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i --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/pthread-ext/26_stack_cas_longer-1.i -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 e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f --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 02:33:05,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:33:05,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:33:05,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:33:05,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:33:05,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:33:05,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:33:05,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:33:05,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:33:05,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:33:05,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:33:05,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:33:05,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:33:05,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:33:05,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:33:05,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:33:05,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:33:05,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:33:05,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:33:05,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:33:05,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:33:05,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:33:05,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:33:05,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:33:05,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:33:05,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:33:05,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:33:05,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:33:05,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:33:05,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:33:05,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:33:05,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:33:05,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:33:05,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:33:05,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:33:05,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:33:05,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:33:05,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:33:05,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:33:05,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:33:05,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:33:05,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:33:05,781 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:33:05,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:33:05,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:33:05,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:33:05,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:33:05,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:33:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:33:05,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:33:05,784 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:33:05,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:33:05,784 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:33:05,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:33:05,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:33:05,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:33:05,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:33:05,785 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:33:05,785 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:33:05,785 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:33:05,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:33:05,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:33:05,786 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:33:05,786 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:33:05,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:33:05,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:33:05,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:33:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:33:05,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:33:05,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:33:05,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:33:05,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:33:05,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:33:05,789 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:33:05,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:33:05,789 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:33:05,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:33:06,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:33:06,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:33:06,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:33:06,102 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:33:06,103 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:33:06,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-30 02:33:07,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:33:07,515 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:33:07,515 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-30 02:33:07,535 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b345ce94/cb735ccd44734bd1bdcd3d154db413cc/FLAG80680eb6d [2023-08-30 02:33:07,547 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b345ce94/cb735ccd44734bd1bdcd3d154db413cc [2023-08-30 02:33:07,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:33:07,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:33:07,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:33:07,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:33:07,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:33:07,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:33:07" (1/1) ... [2023-08-30 02:33:07,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcb747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:07, skipping insertion in model container [2023-08-30 02:33:07,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:33:07" (1/1) ... [2023-08-30 02:33:07,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:33:07,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:33:07,928 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-30 02:33:07,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:33:07,953 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:33:08,020 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-30 02:33:08,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:33:08,060 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:33:08,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08 WrapperNode [2023-08-30 02:33:08,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:33:08,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:33:08,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:33:08,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:33:08,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,111 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 190 [2023-08-30 02:33:08,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:33:08,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:33:08,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:33:08,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:33:08,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:33:08,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:33:08,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:33:08,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:33:08,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (1/1) ... [2023-08-30 02:33:08,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:33:08,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:33:08,209 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 02:33:08,213 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 02:33:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 02:33:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 02:33:08,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 02:33:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:33:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:33:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:33:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:33:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:33:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:33:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:33:08,247 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 02:33:08,361 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:33:08,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:33:08,789 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:33:09,038 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:33:09,038 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 02:33:09,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:09 BoogieIcfgContainer [2023-08-30 02:33:09,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:33:09,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:33:09,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:33:09,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:33:09,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:33:07" (1/3) ... [2023-08-30 02:33:09,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566a63aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:33:09, skipping insertion in model container [2023-08-30 02:33:09,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:08" (2/3) ... [2023-08-30 02:33:09,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566a63aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:33:09, skipping insertion in model container [2023-08-30 02:33:09,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:09" (3/3) ... [2023-08-30 02:33:09,049 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2023-08-30 02:33:09,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:33:09,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 02:33:09,065 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:33:09,184 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:33:09,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 325 flow [2023-08-30 02:33:09,304 INFO L130 PetriNetUnfolder]: 11/175 cut-off events. [2023-08-30 02:33:09,304 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:09,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 175 events. 11/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 331 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 135. Up to 4 conditions per place. [2023-08-30 02:33:09,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 160 transitions, 325 flow [2023-08-30 02:33:09,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 160 transitions, 325 flow [2023-08-30 02:33:09,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:33:09,332 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 160 transitions, 325 flow [2023-08-30 02:33:09,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 160 transitions, 325 flow [2023-08-30 02:33:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 325 flow [2023-08-30 02:33:09,382 INFO L130 PetriNetUnfolder]: 11/175 cut-off events. [2023-08-30 02:33:09,383 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:09,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 175 events. 11/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 331 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 135. Up to 4 conditions per place. [2023-08-30 02:33:09,399 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2023-08-30 02:33:14,574 INFO L134 LiptonReduction]: Checked pairs total: 8906 [2023-08-30 02:33:14,574 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-30 02:33:14,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:33:14,589 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;@6fa2b698, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:33:14,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 82 error locations. [2023-08-30 02:33:14,591 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 02:33:14,591 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:14,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:14,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:14,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:33:14,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:14,597 INFO L85 PathProgramCache]: Analyzing trace with hash 30939, now seen corresponding path program 1 times [2023-08-30 02:33:14,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:14,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100040744] [2023-08-30 02:33:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:14,957 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 02:33:14,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100040744] [2023-08-30 02:33:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100040744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:14,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:14,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:14,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137035948] [2023-08-30 02:33:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:14,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:14,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:14,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:15,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 313 [2023-08-30 02:33:15,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:15,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 313 [2023-08-30 02:33:15,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:15,129 INFO L130 PetriNetUnfolder]: 128/284 cut-off events. [2023-08-30 02:33:15,130 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:15,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 284 events. 128/284 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1141 event pairs, 108 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 554. Up to 279 conditions per place. [2023-08-30 02:33:15,133 INFO L137 encePairwiseOnDemand]: 292/313 looper letters, 45 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 02:33:15,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 193 flow [2023-08-30 02:33:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-30 02:33:15,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249201277955272 [2023-08-30 02:33:15,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-30 02:33:15,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-30 02:33:15,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:15,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-30 02:33:15,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,170 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 147 flow. Second operand 3 states and 399 transitions. [2023-08-30 02:33:15,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 193 flow [2023-08-30 02:33:15,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:15,174 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 103 flow [2023-08-30 02:33:15,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-08-30 02:33:15,179 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places. [2023-08-30 02:33:15,179 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 103 flow [2023-08-30 02:33:15,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:15,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:33:15,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:33:15,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash 30941, now seen corresponding path program 1 times [2023-08-30 02:33:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:15,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947083186] [2023-08-30 02:33:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:15,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:15,222 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 02:33:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947083186] [2023-08-30 02:33:15,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947083186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:15,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:15,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:15,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221770742] [2023-08-30 02:33:15,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:15,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:15,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:15,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:15,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 313 [2023-08-30 02:33:15,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:15,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 313 [2023-08-30 02:33:15,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:15,474 INFO L130 PetriNetUnfolder]: 172/397 cut-off events. [2023-08-30 02:33:15,475 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:15,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 397 events. 172/397 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1608 event pairs, 90 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 787. Up to 205 conditions per place. [2023-08-30 02:33:15,477 INFO L137 encePairwiseOnDemand]: 308/313 looper letters, 74 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-30 02:33:15,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 80 transitions, 323 flow [2023-08-30 02:33:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-08-30 02:33:15,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.422790202342918 [2023-08-30 02:33:15,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-08-30 02:33:15,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-08-30 02:33:15,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:15,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-08-30 02:33:15,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,484 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 103 flow. Second operand 3 states and 397 transitions. [2023-08-30 02:33:15,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 80 transitions, 323 flow [2023-08-30 02:33:15,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 80 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:15,487 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 132 flow [2023-08-30 02:33:15,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-08-30 02:33:15,487 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -16 predicate places. [2023-08-30 02:33:15,488 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 132 flow [2023-08-30 02:33:15,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:15,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:33:15,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:33:15,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:33:15,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash 29758463, now seen corresponding path program 1 times [2023-08-30 02:33:15,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:15,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099515850] [2023-08-30 02:33:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:15,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:15,583 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 02:33:15,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:15,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099515850] [2023-08-30 02:33:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099515850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:15,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:15,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762661010] [2023-08-30 02:33:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:15,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:15,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:15,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:15,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 313 [2023-08-30 02:33:15,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:15,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 313 [2023-08-30 02:33:15,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:15,820 INFO L130 PetriNetUnfolder]: 171/415 cut-off events. [2023-08-30 02:33:15,821 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-30 02:33:15,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 415 events. 171/415 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1807 event pairs, 112 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 959. Up to 238 conditions per place. [2023-08-30 02:33:15,823 INFO L137 encePairwiseOnDemand]: 308/313 looper letters, 71 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-08-30 02:33:15,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 338 flow [2023-08-30 02:33:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-30 02:33:15,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142705005324814 [2023-08-30 02:33:15,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-30 02:33:15,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-30 02:33:15,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:15,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-30 02:33:15,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,830 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 132 flow. Second operand 3 states and 389 transitions. [2023-08-30 02:33:15,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 338 flow [2023-08-30 02:33:15,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:33:15,833 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 141 flow [2023-08-30 02:33:15,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-30 02:33:15,834 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -17 predicate places. [2023-08-30 02:33:15,834 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 141 flow [2023-08-30 02:33:15,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:15,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:33:15,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:33:15,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:33:15,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:15,835 INFO L85 PathProgramCache]: Analyzing trace with hash 29758586, now seen corresponding path program 1 times [2023-08-30 02:33:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:15,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23415157] [2023-08-30 02:33:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:15,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:15,918 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 02:33:15,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:15,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23415157] [2023-08-30 02:33:15,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23415157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:15,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:15,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655772189] [2023-08-30 02:33:15,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:15,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:15,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:15,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:15,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 313 [2023-08-30 02:33:15,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:15,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:15,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 313 [2023-08-30 02:33:15,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:16,066 INFO L130 PetriNetUnfolder]: 161/402 cut-off events. [2023-08-30 02:33:16,066 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 02:33:16,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 402 events. 161/402 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1764 event pairs, 129 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 906. Up to 375 conditions per place. [2023-08-30 02:33:16,069 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 45 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 02:33:16,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 227 flow [2023-08-30 02:33:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-30 02:33:16,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951011714589989 [2023-08-30 02:33:16,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-30 02:33:16,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-30 02:33:16,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:16,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-30 02:33:16,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,075 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 141 flow. Second operand 3 states and 371 transitions. [2023-08-30 02:33:16,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 227 flow [2023-08-30 02:33:16,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:16,077 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 134 flow [2023-08-30 02:33:16,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-08-30 02:33:16,078 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -19 predicate places. [2023-08-30 02:33:16,079 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 134 flow [2023-08-30 02:33:16,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:16,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:33:16,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:33:16,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:33:16,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:16,080 INFO L85 PathProgramCache]: Analyzing trace with hash 29758464, now seen corresponding path program 1 times [2023-08-30 02:33:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:16,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204078821] [2023-08-30 02:33:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:16,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:16,207 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 02:33:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204078821] [2023-08-30 02:33:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204078821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218927822] [2023-08-30 02:33:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:16,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 313 [2023-08-30 02:33:16,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:16,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 313 [2023-08-30 02:33:16,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:16,328 INFO L130 PetriNetUnfolder]: 157/392 cut-off events. [2023-08-30 02:33:16,328 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 02:33:16,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 392 events. 157/392 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1710 event pairs, 125 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 878. Up to 365 conditions per place. [2023-08-30 02:33:16,330 INFO L137 encePairwiseOnDemand]: 310/313 looper letters, 43 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-30 02:33:16,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 218 flow [2023-08-30 02:33:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-08-30 02:33:16,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014909478168264 [2023-08-30 02:33:16,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-08-30 02:33:16,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-08-30 02:33:16,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:16,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-08-30 02:33:16,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,337 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 134 flow. Second operand 3 states and 377 transitions. [2023-08-30 02:33:16,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 218 flow [2023-08-30 02:33:16,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:16,340 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 131 flow [2023-08-30 02:33:16,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-08-30 02:33:16,343 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -20 predicate places. [2023-08-30 02:33:16,343 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 131 flow [2023-08-30 02:33:16,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:16,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:33:16,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:33:16,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:33:16,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash 922513359, now seen corresponding path program 1 times [2023-08-30 02:33:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:16,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940601673] [2023-08-30 02:33:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:16,438 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 02:33:16,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:16,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940601673] [2023-08-30 02:33:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940601673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:16,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335229634] [2023-08-30 02:33:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:16,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:16,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:16,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 313 [2023-08-30 02:33:16,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:16,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 313 [2023-08-30 02:33:16,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:16,626 INFO L130 PetriNetUnfolder]: 145/346 cut-off events. [2023-08-30 02:33:16,627 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 02:33:16,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 346 events. 145/346 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1386 event pairs, 50 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 779. Up to 170 conditions per place. [2023-08-30 02:33:16,629 INFO L137 encePairwiseOnDemand]: 306/313 looper letters, 58 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2023-08-30 02:33:16,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 311 flow [2023-08-30 02:33:16,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:33:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:33:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-30 02:33:16,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777955271565495 [2023-08-30 02:33:16,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-30 02:33:16,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-30 02:33:16,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:16,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-30 02:33:16,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,636 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 131 flow. Second operand 4 states and 473 transitions. [2023-08-30 02:33:16,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 311 flow [2023-08-30 02:33:16,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:16,638 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 140 flow [2023-08-30 02:33:16,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 02:33:16,639 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -21 predicate places. [2023-08-30 02:33:16,639 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 140 flow [2023-08-30 02:33:16,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:16,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:16,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 02:33:16,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:33:16,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2023-08-30 02:33:16,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1466791183, now seen corresponding path program 1 times [2023-08-30 02:33:16,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:16,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641409949] [2023-08-30 02:33:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:16,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:16,649 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:33:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:16,670 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:33:16,670 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:33:16,671 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (81 of 82 remaining) [2023-08-30 02:33:16,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 82 remaining) [2023-08-30 02:33:16,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 82 remaining) [2023-08-30 02:33:16,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 82 remaining) [2023-08-30 02:33:16,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 82 remaining) [2023-08-30 02:33:16,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 82 remaining) [2023-08-30 02:33:16,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 82 remaining) [2023-08-30 02:33:16,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 82 remaining) [2023-08-30 02:33:16,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 82 remaining) [2023-08-30 02:33:16,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 82 remaining) [2023-08-30 02:33:16,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 82 remaining) [2023-08-30 02:33:16,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 82 remaining) [2023-08-30 02:33:16,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 82 remaining) [2023-08-30 02:33:16,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 82 remaining) [2023-08-30 02:33:16,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 82 remaining) [2023-08-30 02:33:16,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 82 remaining) [2023-08-30 02:33:16,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 82 remaining) [2023-08-30 02:33:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 82 remaining) [2023-08-30 02:33:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 82 remaining) [2023-08-30 02:33:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 82 remaining) [2023-08-30 02:33:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 82 remaining) [2023-08-30 02:33:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 82 remaining) [2023-08-30 02:33:16,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 82 remaining) [2023-08-30 02:33:16,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (58 of 82 remaining) [2023-08-30 02:33:16,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 82 remaining) [2023-08-30 02:33:16,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 82 remaining) [2023-08-30 02:33:16,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (55 of 82 remaining) [2023-08-30 02:33:16,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 82 remaining) [2023-08-30 02:33:16,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 82 remaining) [2023-08-30 02:33:16,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (52 of 82 remaining) [2023-08-30 02:33:16,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 82 remaining) [2023-08-30 02:33:16,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 82 remaining) [2023-08-30 02:33:16,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 82 remaining) [2023-08-30 02:33:16,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 82 remaining) [2023-08-30 02:33:16,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 82 remaining) [2023-08-30 02:33:16,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 82 remaining) [2023-08-30 02:33:16,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 82 remaining) [2023-08-30 02:33:16,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 82 remaining) [2023-08-30 02:33:16,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 82 remaining) [2023-08-30 02:33:16,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 82 remaining) [2023-08-30 02:33:16,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 82 remaining) [2023-08-30 02:33:16,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 82 remaining) [2023-08-30 02:33:16,681 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (39 of 82 remaining) [2023-08-30 02:33:16,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 82 remaining) [2023-08-30 02:33:16,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 82 remaining) [2023-08-30 02:33:16,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 82 remaining) [2023-08-30 02:33:16,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 82 remaining) [2023-08-30 02:33:16,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 82 remaining) [2023-08-30 02:33:16,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 82 remaining) [2023-08-30 02:33:16,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 82 remaining) [2023-08-30 02:33:16,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 82 remaining) [2023-08-30 02:33:16,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 82 remaining) [2023-08-30 02:33:16,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 82 remaining) [2023-08-30 02:33:16,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 82 remaining) [2023-08-30 02:33:16,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 82 remaining) [2023-08-30 02:33:16,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 82 remaining) [2023-08-30 02:33:16,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 82 remaining) [2023-08-30 02:33:16,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 82 remaining) [2023-08-30 02:33:16,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 82 remaining) [2023-08-30 02:33:16,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 82 remaining) [2023-08-30 02:33:16,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 82 remaining) [2023-08-30 02:33:16,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 82 remaining) [2023-08-30 02:33:16,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 82 remaining) [2023-08-30 02:33:16,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 82 remaining) [2023-08-30 02:33:16,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 82 remaining) [2023-08-30 02:33:16,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (16 of 82 remaining) [2023-08-30 02:33:16,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 82 remaining) [2023-08-30 02:33:16,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 82 remaining) [2023-08-30 02:33:16,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (13 of 82 remaining) [2023-08-30 02:33:16,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 82 remaining) [2023-08-30 02:33:16,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 82 remaining) [2023-08-30 02:33:16,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (10 of 82 remaining) [2023-08-30 02:33:16,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 82 remaining) [2023-08-30 02:33:16,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 82 remaining) [2023-08-30 02:33:16,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 82 remaining) [2023-08-30 02:33:16,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 82 remaining) [2023-08-30 02:33:16,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 82 remaining) [2023-08-30 02:33:16,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 82 remaining) [2023-08-30 02:33:16,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 82 remaining) [2023-08-30 02:33:16,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 82 remaining) [2023-08-30 02:33:16,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 82 remaining) [2023-08-30 02:33:16,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 82 remaining) [2023-08-30 02:33:16,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:33:16,689 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:33:16,691 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:33:16,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 02:33:16,777 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:33:16,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 279 transitions, 570 flow [2023-08-30 02:33:16,820 INFO L130 PetriNetUnfolder]: 21/311 cut-off events. [2023-08-30 02:33:16,820 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:33:16,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 311 events. 21/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 937 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 253. Up to 6 conditions per place. [2023-08-30 02:33:16,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 279 transitions, 570 flow [2023-08-30 02:33:16,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 279 transitions, 570 flow [2023-08-30 02:33:16,830 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:33:16,830 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 279 transitions, 570 flow [2023-08-30 02:33:16,831 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 279 transitions, 570 flow [2023-08-30 02:33:16,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 279 transitions, 570 flow [2023-08-30 02:33:16,870 INFO L130 PetriNetUnfolder]: 21/311 cut-off events. [2023-08-30 02:33:16,870 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:33:16,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 311 events. 21/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 937 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 253. Up to 6 conditions per place. [2023-08-30 02:33:16,890 INFO L119 LiptonReduction]: Number of co-enabled transitions 36580 [2023-08-30 02:33:22,699 INFO L134 LiptonReduction]: Checked pairs total: 126176 [2023-08-30 02:33:22,699 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-30 02:33:22,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:33:22,702 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;@6fa2b698, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:33:22,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 121 error locations. [2023-08-30 02:33:22,718 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 02:33:22,718 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:22,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:22,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:22,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:22,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash 50548, now seen corresponding path program 1 times [2023-08-30 02:33:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709661549] [2023-08-30 02:33:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:22,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:22,748 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 02:33:22,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709661549] [2023-08-30 02:33:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709661549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:22,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:22,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:22,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047198434] [2023-08-30 02:33:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:22,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:22,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:22,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 494 [2023-08-30 02:33:22,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 147 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:22,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:22,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 494 [2023-08-30 02:33:22,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:24,310 INFO L130 PetriNetUnfolder]: 8890/14805 cut-off events. [2023-08-30 02:33:24,310 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 02:33:24,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28721 conditions, 14805 events. 8890/14805 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 121166 event pairs, 7876 based on Foata normal form. 216/6101 useless extension candidates. Maximal degree in co-relation 23282. Up to 13771 conditions per place. [2023-08-30 02:33:24,399 INFO L137 encePairwiseOnDemand]: 463/494 looper letters, 90 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-08-30 02:33:24,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 114 transitions, 422 flow [2023-08-30 02:33:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-08-30 02:33:24,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601889338731444 [2023-08-30 02:33:24,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-08-30 02:33:24,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-08-30 02:33:24,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:24,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-08-30 02:33:24,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:24,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:24,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:24,406 INFO L175 Difference]: Start difference. First operand has 138 places, 147 transitions, 306 flow. Second operand 3 states and 682 transitions. [2023-08-30 02:33:24,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 114 transitions, 422 flow [2023-08-30 02:33:24,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 114 transitions, 420 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:24,410 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 240 flow [2023-08-30 02:33:24,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2023-08-30 02:33:24,411 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -27 predicate places. [2023-08-30 02:33:24,411 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 240 flow [2023-08-30 02:33:24,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:24,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:24,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:24,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:33:24,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:24,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash 50550, now seen corresponding path program 1 times [2023-08-30 02:33:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807342358] [2023-08-30 02:33:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:24,441 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 02:33:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807342358] [2023-08-30 02:33:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807342358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:24,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055747902] [2023-08-30 02:33:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:24,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:24,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 494 [2023-08-30 02:33:24,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:24,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:24,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 494 [2023-08-30 02:33:24,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:26,784 INFO L130 PetriNetUnfolder]: 13373/22885 cut-off events. [2023-08-30 02:33:26,785 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-08-30 02:33:26,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44367 conditions, 22885 events. 13373/22885 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 191985 event pairs, 5727 based on Foata normal form. 0/10053 useless extension candidates. Maximal degree in co-relation 44359. Up to 11696 conditions per place. [2023-08-30 02:33:26,918 INFO L137 encePairwiseOnDemand]: 487/494 looper letters, 173 selfloop transitions, 6 changer transitions 0/202 dead transitions. [2023-08-30 02:33:26,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 202 transitions, 779 flow [2023-08-30 02:33:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:26,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2023-08-30 02:33:26,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48380566801619435 [2023-08-30 02:33:26,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2023-08-30 02:33:26,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2023-08-30 02:33:26,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:26,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2023-08-30 02:33:26,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:26,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:26,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:26,928 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 240 flow. Second operand 3 states and 717 transitions. [2023-08-30 02:33:26,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 202 transitions, 779 flow [2023-08-30 02:33:26,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 202 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:26,932 INFO L231 Difference]: Finished difference. Result has 114 places, 119 transitions, 285 flow [2023-08-30 02:33:26,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=114, PETRI_TRANSITIONS=119} [2023-08-30 02:33:26,934 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -24 predicate places. [2023-08-30 02:33:26,934 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 119 transitions, 285 flow [2023-08-30 02:33:26,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:26,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:26,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:33:26,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 02:33:26,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:26,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash 48620389, now seen corresponding path program 1 times [2023-08-30 02:33:26,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983204814] [2023-08-30 02:33:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:26,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:27,043 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 02:33:27,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983204814] [2023-08-30 02:33:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983204814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:27,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:27,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586121417] [2023-08-30 02:33:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:27,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:27,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:27,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 494 [2023-08-30 02:33:27,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 119 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:27,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:27,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 494 [2023-08-30 02:33:27,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:30,634 INFO L130 PetriNetUnfolder]: 24896/43181 cut-off events. [2023-08-30 02:33:30,634 INFO L131 PetriNetUnfolder]: For 14987/14987 co-relation queries the response was YES. [2023-08-30 02:33:30,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95659 conditions, 43181 events. 24896/43181 cut-off events. For 14987/14987 co-relation queries the response was YES. Maximal size of possible extension queue 2487. Compared 411719 event pairs, 6915 based on Foata normal form. 0/22665 useless extension candidates. Maximal degree in co-relation 95648. Up to 16956 conditions per place. [2023-08-30 02:33:30,931 INFO L137 encePairwiseOnDemand]: 481/494 looper letters, 240 selfloop transitions, 17 changer transitions 0/280 dead transitions. [2023-08-30 02:33:30,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 280 transitions, 1176 flow [2023-08-30 02:33:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:33:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:33:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 965 transitions. [2023-08-30 02:33:30,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883603238866397 [2023-08-30 02:33:30,935 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 965 transitions. [2023-08-30 02:33:30,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 965 transitions. [2023-08-30 02:33:30,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:30,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 965 transitions. [2023-08-30 02:33:30,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 241.25) internal successors, (965), 4 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:30,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:30,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:30,942 INFO L175 Difference]: Start difference. First operand has 114 places, 119 transitions, 285 flow. Second operand 4 states and 965 transitions. [2023-08-30 02:33:30,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 280 transitions, 1176 flow [2023-08-30 02:33:30,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 280 transitions, 1146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:33:30,963 INFO L231 Difference]: Finished difference. Result has 118 places, 135 transitions, 433 flow [2023-08-30 02:33:30,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=433, PETRI_PLACES=118, PETRI_TRANSITIONS=135} [2023-08-30 02:33:30,964 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -20 predicate places. [2023-08-30 02:33:30,965 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 135 transitions, 433 flow [2023-08-30 02:33:30,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:30,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:30,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:33:30,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 02:33:30,966 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:30,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash 48620390, now seen corresponding path program 1 times [2023-08-30 02:33:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178703995] [2023-08-30 02:33:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:30,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:31,079 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 02:33:31,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:31,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178703995] [2023-08-30 02:33:31,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178703995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:31,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:31,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:31,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287771062] [2023-08-30 02:33:31,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:31,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:31,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:31,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:31,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:31,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 494 [2023-08-30 02:33:31,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 135 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:31,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:31,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 494 [2023-08-30 02:33:31,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:34,378 INFO L130 PetriNetUnfolder]: 23138/39920 cut-off events. [2023-08-30 02:33:34,378 INFO L131 PetriNetUnfolder]: For 12770/12770 co-relation queries the response was YES. [2023-08-30 02:33:34,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90442 conditions, 39920 events. 23138/39920 cut-off events. For 12770/12770 co-relation queries the response was YES. Maximal size of possible extension queue 2345. Compared 376939 event pairs, 18558 based on Foata normal form. 400/20126 useless extension candidates. Maximal degree in co-relation 90428. Up to 36350 conditions per place. [2023-08-30 02:33:34,648 INFO L137 encePairwiseOnDemand]: 489/494 looper letters, 107 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2023-08-30 02:33:34,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 641 flow [2023-08-30 02:33:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-08-30 02:33:34,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44197031039136303 [2023-08-30 02:33:34,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-08-30 02:33:34,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-08-30 02:33:34,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:34,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-08-30 02:33:34,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:34,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:34,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:34,665 INFO L175 Difference]: Start difference. First operand has 118 places, 135 transitions, 433 flow. Second operand 3 states and 655 transitions. [2023-08-30 02:33:34,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 641 flow [2023-08-30 02:33:34,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 131 transitions, 641 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:34,683 INFO L231 Difference]: Finished difference. Result has 116 places, 131 transitions, 427 flow [2023-08-30 02:33:34,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=116, PETRI_TRANSITIONS=131} [2023-08-30 02:33:34,685 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -22 predicate places. [2023-08-30 02:33:34,685 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 131 transitions, 427 flow [2023-08-30 02:33:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:34,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:34,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:33:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 02:33:34,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:34,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash -520408120, now seen corresponding path program 1 times [2023-08-30 02:33:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:34,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241594504] [2023-08-30 02:33:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:34,773 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 02:33:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241594504] [2023-08-30 02:33:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241594504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:34,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:34,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:34,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460351604] [2023-08-30 02:33:34,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:34,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:34,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 494 [2023-08-30 02:33:34,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 131 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:34,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:34,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 494 [2023-08-30 02:33:34,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:37,583 INFO L130 PetriNetUnfolder]: 19325/33323 cut-off events. [2023-08-30 02:33:37,583 INFO L131 PetriNetUnfolder]: For 11192/11192 co-relation queries the response was YES. [2023-08-30 02:33:37,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75825 conditions, 33323 events. 19325/33323 cut-off events. For 11192/11192 co-relation queries the response was YES. Maximal size of possible extension queue 1889. Compared 306831 event pairs, 15225 based on Foata normal form. 303/17883 useless extension candidates. Maximal degree in co-relation 75809. Up to 30216 conditions per place. [2023-08-30 02:33:37,772 INFO L137 encePairwiseOnDemand]: 485/494 looper letters, 100 selfloop transitions, 1 changer transitions 0/123 dead transitions. [2023-08-30 02:33:37,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 613 flow [2023-08-30 02:33:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2023-08-30 02:33:37,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2023-08-30 02:33:37,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2023-08-30 02:33:37,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2023-08-30 02:33:37,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:37,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2023-08-30 02:33:37,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:37,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:37,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:37,788 INFO L175 Difference]: Start difference. First operand has 116 places, 131 transitions, 427 flow. Second operand 3 states and 637 transitions. [2023-08-30 02:33:37,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 613 flow [2023-08-30 02:33:37,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 123 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:37,798 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 412 flow [2023-08-30 02:33:37,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2023-08-30 02:33:37,799 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -29 predicate places. [2023-08-30 02:33:37,799 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 412 flow [2023-08-30 02:33:37,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:37,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:37,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:33:37,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 02:33:37,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:37,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:37,801 INFO L85 PathProgramCache]: Analyzing trace with hash -520408121, now seen corresponding path program 1 times [2023-08-30 02:33:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:37,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228879939] [2023-08-30 02:33:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:37,859 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 02:33:37,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:37,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228879939] [2023-08-30 02:33:37,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228879939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:37,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:37,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:33:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174685576] [2023-08-30 02:33:37,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:37,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 494 [2023-08-30 02:33:37,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:37,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:37,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 494 [2023-08-30 02:33:37,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:40,998 INFO L130 PetriNetUnfolder]: 19062/33974 cut-off events. [2023-08-30 02:33:40,998 INFO L131 PetriNetUnfolder]: For 11203/11203 co-relation queries the response was YES. [2023-08-30 02:33:41,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77289 conditions, 33974 events. 19062/33974 cut-off events. For 11203/11203 co-relation queries the response was YES. Maximal size of possible extension queue 2023. Compared 326376 event pairs, 5568 based on Foata normal form. 0/18839 useless extension candidates. Maximal degree in co-relation 77272. Up to 22524 conditions per place. [2023-08-30 02:33:41,201 INFO L137 encePairwiseOnDemand]: 463/494 looper letters, 204 selfloop transitions, 39 changer transitions 0/263 dead transitions. [2023-08-30 02:33:41,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 263 transitions, 1288 flow [2023-08-30 02:33:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 02:33:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 02:33:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 911 transitions. [2023-08-30 02:33:41,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610323886639676 [2023-08-30 02:33:41,208 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 911 transitions. [2023-08-30 02:33:41,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 911 transitions. [2023-08-30 02:33:41,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:41,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 911 transitions. [2023-08-30 02:33:41,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.75) internal successors, (911), 4 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:41,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:41,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:41,216 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 412 flow. Second operand 4 states and 911 transitions. [2023-08-30 02:33:41,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 263 transitions, 1288 flow [2023-08-30 02:33:41,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 263 transitions, 1287 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:41,233 INFO L231 Difference]: Finished difference. Result has 114 places, 153 transitions, 771 flow [2023-08-30 02:33:41,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=771, PETRI_PLACES=114, PETRI_TRANSITIONS=153} [2023-08-30 02:33:41,235 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -24 predicate places. [2023-08-30 02:33:41,235 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 153 transitions, 771 flow [2023-08-30 02:33:41,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:41,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:41,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:33:41,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 02:33:41,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:41,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -962878990, now seen corresponding path program 1 times [2023-08-30 02:33:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:41,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734665961] [2023-08-30 02:33:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:41,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:41,293 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 02:33:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734665961] [2023-08-30 02:33:41,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734665961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:41,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:41,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:33:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268196886] [2023-08-30 02:33:41,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:41,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:33:41,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:33:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:33:41,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 494 [2023-08-30 02:33:41,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 153 transitions, 771 flow. Second operand has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:41,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:41,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 494 [2023-08-30 02:33:41,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:44,714 INFO L130 PetriNetUnfolder]: 20643/36613 cut-off events. [2023-08-30 02:33:44,714 INFO L131 PetriNetUnfolder]: For 24724/24732 co-relation queries the response was YES. [2023-08-30 02:33:44,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95022 conditions, 36613 events. 20643/36613 cut-off events. For 24724/24732 co-relation queries the response was YES. Maximal size of possible extension queue 2151. Compared 350591 event pairs, 12793 based on Foata normal form. 428/23059 useless extension candidates. Maximal degree in co-relation 95001. Up to 28756 conditions per place. [2023-08-30 02:33:44,934 INFO L137 encePairwiseOnDemand]: 482/494 looper letters, 222 selfloop transitions, 12 changer transitions 0/254 dead transitions. [2023-08-30 02:33:44,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 254 transitions, 1723 flow [2023-08-30 02:33:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:33:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:33:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1079 transitions. [2023-08-30 02:33:44,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2023-08-30 02:33:44,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1079 transitions. [2023-08-30 02:33:44,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1079 transitions. [2023-08-30 02:33:44,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:44,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1079 transitions. [2023-08-30 02:33:44,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.8) internal successors, (1079), 5 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:44,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 494.0) internal successors, (2964), 6 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:44,944 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 494.0) internal successors, (2964), 6 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:44,945 INFO L175 Difference]: Start difference. First operand has 114 places, 153 transitions, 771 flow. Second operand 5 states and 1079 transitions. [2023-08-30 02:33:44,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 254 transitions, 1723 flow [2023-08-30 02:33:44,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 254 transitions, 1714 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:44,964 INFO L231 Difference]: Finished difference. Result has 121 places, 164 transitions, 888 flow [2023-08-30 02:33:44,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=888, PETRI_PLACES=121, PETRI_TRANSITIONS=164} [2023-08-30 02:33:44,965 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -17 predicate places. [2023-08-30 02:33:44,965 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 164 transitions, 888 flow [2023-08-30 02:33:44,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.5) internal successors, (738), 4 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:44,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:44,966 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 02:33:44,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 02:33:44,966 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-30 02:33:44,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1209779092, now seen corresponding path program 1 times [2023-08-30 02:33:44,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:44,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893449769] [2023-08-30 02:33:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:44,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:44,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:33:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:45,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:33:45,006 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:33:45,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (120 of 121 remaining) [2023-08-30 02:33:45,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 121 remaining) [2023-08-30 02:33:45,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 121 remaining) [2023-08-30 02:33:45,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 121 remaining) [2023-08-30 02:33:45,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 121 remaining) [2023-08-30 02:33:45,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 121 remaining) [2023-08-30 02:33:45,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 121 remaining) [2023-08-30 02:33:45,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 121 remaining) [2023-08-30 02:33:45,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 121 remaining) [2023-08-30 02:33:45,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 121 remaining) [2023-08-30 02:33:45,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 121 remaining) [2023-08-30 02:33:45,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 121 remaining) [2023-08-30 02:33:45,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 121 remaining) [2023-08-30 02:33:45,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 121 remaining) [2023-08-30 02:33:45,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 121 remaining) [2023-08-30 02:33:45,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 121 remaining) [2023-08-30 02:33:45,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 121 remaining) [2023-08-30 02:33:45,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 121 remaining) [2023-08-30 02:33:45,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 121 remaining) [2023-08-30 02:33:45,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 121 remaining) [2023-08-30 02:33:45,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 121 remaining) [2023-08-30 02:33:45,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 121 remaining) [2023-08-30 02:33:45,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 121 remaining) [2023-08-30 02:33:45,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (97 of 121 remaining) [2023-08-30 02:33:45,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 121 remaining) [2023-08-30 02:33:45,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 121 remaining) [2023-08-30 02:33:45,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (94 of 121 remaining) [2023-08-30 02:33:45,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 121 remaining) [2023-08-30 02:33:45,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 121 remaining) [2023-08-30 02:33:45,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (91 of 121 remaining) [2023-08-30 02:33:45,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 121 remaining) [2023-08-30 02:33:45,011 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 121 remaining) [2023-08-30 02:33:45,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 121 remaining) [2023-08-30 02:33:45,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 121 remaining) [2023-08-30 02:33:45,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 121 remaining) [2023-08-30 02:33:45,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 121 remaining) [2023-08-30 02:33:45,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 121 remaining) [2023-08-30 02:33:45,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 121 remaining) [2023-08-30 02:33:45,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (78 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 121 remaining) [2023-08-30 02:33:45,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 121 remaining) [2023-08-30 02:33:45,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 121 remaining) [2023-08-30 02:33:45,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 121 remaining) [2023-08-30 02:33:45,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 121 remaining) [2023-08-30 02:33:45,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 121 remaining) [2023-08-30 02:33:45,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 121 remaining) [2023-08-30 02:33:45,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 121 remaining) [2023-08-30 02:33:45,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 121 remaining) [2023-08-30 02:33:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 121 remaining) [2023-08-30 02:33:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 121 remaining) [2023-08-30 02:33:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 121 remaining) [2023-08-30 02:33:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 121 remaining) [2023-08-30 02:33:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 121 remaining) [2023-08-30 02:33:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 121 remaining) [2023-08-30 02:33:45,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 121 remaining) [2023-08-30 02:33:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 121 remaining) [2023-08-30 02:33:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 121 remaining) [2023-08-30 02:33:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 121 remaining) [2023-08-30 02:33:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 121 remaining) [2023-08-30 02:33:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (55 of 121 remaining) [2023-08-30 02:33:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 121 remaining) [2023-08-30 02:33:45,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 121 remaining) [2023-08-30 02:33:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (52 of 121 remaining) [2023-08-30 02:33:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 121 remaining) [2023-08-30 02:33:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 121 remaining) [2023-08-30 02:33:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (49 of 121 remaining) [2023-08-30 02:33:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 121 remaining) [2023-08-30 02:33:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 121 remaining) [2023-08-30 02:33:45,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 121 remaining) [2023-08-30 02:33:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 121 remaining) [2023-08-30 02:33:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 121 remaining) [2023-08-30 02:33:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 121 remaining) [2023-08-30 02:33:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 121 remaining) [2023-08-30 02:33:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 121 remaining) [2023-08-30 02:33:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 121 remaining) [2023-08-30 02:33:45,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 121 remaining) [2023-08-30 02:33:45,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 121 remaining) [2023-08-30 02:33:45,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 121 remaining) [2023-08-30 02:33:45,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 121 remaining) [2023-08-30 02:33:45,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 121 remaining) [2023-08-30 02:33:45,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 121 remaining) [2023-08-30 02:33:45,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 121 remaining) [2023-08-30 02:33:45,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 121 remaining) [2023-08-30 02:33:45,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 121 remaining) [2023-08-30 02:33:45,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 121 remaining) [2023-08-30 02:33:45,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 121 remaining) [2023-08-30 02:33:45,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 121 remaining) [2023-08-30 02:33:45,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 121 remaining) [2023-08-30 02:33:45,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 121 remaining) [2023-08-30 02:33:45,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 121 remaining) [2023-08-30 02:33:45,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 121 remaining) [2023-08-30 02:33:45,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 121 remaining) [2023-08-30 02:33:45,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 121 remaining) [2023-08-30 02:33:45,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 121 remaining) [2023-08-30 02:33:45,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 121 remaining) [2023-08-30 02:33:45,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 121 remaining) [2023-08-30 02:33:45,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 121 remaining) [2023-08-30 02:33:45,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 121 remaining) [2023-08-30 02:33:45,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONARRAY_INDEX (16 of 121 remaining) [2023-08-30 02:33:45,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 121 remaining) [2023-08-30 02:33:45,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 121 remaining) [2023-08-30 02:33:45,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (13 of 121 remaining) [2023-08-30 02:33:45,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 121 remaining) [2023-08-30 02:33:45,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 121 remaining) [2023-08-30 02:33:45,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38ASSERT_VIOLATIONMEMORY_LEAK (10 of 121 remaining) [2023-08-30 02:33:45,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 121 remaining) [2023-08-30 02:33:45,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 121 remaining) [2023-08-30 02:33:45,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 121 remaining) [2023-08-30 02:33:45,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 121 remaining) [2023-08-30 02:33:45,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 121 remaining) [2023-08-30 02:33:45,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 121 remaining) [2023-08-30 02:33:45,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 121 remaining) [2023-08-30 02:33:45,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 121 remaining) [2023-08-30 02:33:45,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 121 remaining) [2023-08-30 02:33:45,024 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 121 remaining) [2023-08-30 02:33:45,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 02:33:45,024 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:33:45,025 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:33:45,025 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 02:33:45,111 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:33:45,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 398 transitions, 817 flow [2023-08-30 02:33:45,200 INFO L130 PetriNetUnfolder]: 31/447 cut-off events. [2023-08-30 02:33:45,201 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:33:45,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 31/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1685 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 371. Up to 8 conditions per place. [2023-08-30 02:33:45,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 398 transitions, 817 flow [2023-08-30 02:33:45,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 377 places, 398 transitions, 817 flow [2023-08-30 02:33:45,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:33:45,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 398 transitions, 817 flow [2023-08-30 02:33:45,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 398 transitions, 817 flow [2023-08-30 02:33:45,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 398 transitions, 817 flow [2023-08-30 02:33:45,445 INFO L130 PetriNetUnfolder]: 31/447 cut-off events. [2023-08-30 02:33:45,445 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:33:45,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 447 events. 31/447 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1685 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 371. Up to 8 conditions per place. [2023-08-30 02:33:45,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 96996 [2023-08-30 02:33:53,716 INFO L134 LiptonReduction]: Checked pairs total: 339414 [2023-08-30 02:33:53,716 INFO L136 LiptonReduction]: Total number of compositions: 330 [2023-08-30 02:33:53,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:33:53,718 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;@6fa2b698, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:33:53,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 160 error locations. [2023-08-30 02:33:53,720 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 02:33:53,720 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:53,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:53,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:53,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 157 more)] === [2023-08-30 02:33:53,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:53,720 INFO L85 PathProgramCache]: Analyzing trace with hash 77615, now seen corresponding path program 1 times [2023-08-30 02:33:53,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:53,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030895353] [2023-08-30 02:33:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:53,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:53,740 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 02:33:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030895353] [2023-08-30 02:33:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030895353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:53,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:53,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664893100] [2023-08-30 02:33:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:53,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:53,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 728 [2023-08-30 02:33:53,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 215 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:53,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:53,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 728 [2023-08-30 02:33:53,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand