./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 23:12:12,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:12:12,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:12:12,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:12:12,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:12:12,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:12:12,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:12:12,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:12:12,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:12:12,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:12:12,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:12:12,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:12:12,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:12:12,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:12:12,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:12:12,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:12:12,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:12:12,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:12:12,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:12:12,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:12:12,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:12:12,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:12:12,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:12:12,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:12:12,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:12:12,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:12:12,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:12:12,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:12:12,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:12:12,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:12:12,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:12:12,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:12:12,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:12:12,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:12:12,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:12:12,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:12:12,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:12:12,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:12:12,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:12:12,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:12:12,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:12:12,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:12:12,760 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:12:12,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:12:12,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:12:12,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:12:12,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:12:12,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:12:12,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:12:12,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:12:12,764 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:12:12,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:12:12,765 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:12:12,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:12:12,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:12:12,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:12:12,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:12:12,766 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:12:12,767 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:12:12,767 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:12:12,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:12:12,767 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:12:12,767 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:12:12,767 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:12:12,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:12:12,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:12:12,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:12:12,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:12:12,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:12:12,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:12:12,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:12:12,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:12:12,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:12:12,770 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:12:12,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:12:12,770 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:12:12,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:12:13,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:12:13,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:12:13,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:12:13,084 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:12:13,084 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:12:13,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-29 23:12:14,207 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:12:14,411 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:12:14,412 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-29 23:12:14,420 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842cc98a6/7a8bbd8c6d7440c69cf99d706408c72d/FLAG3b25925d9 [2023-08-29 23:12:14,446 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/842cc98a6/7a8bbd8c6d7440c69cf99d706408c72d [2023-08-29 23:12:14,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:12:14,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:12:14,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:12:14,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:12:14,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:12:14,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b85d47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14, skipping insertion in model container [2023-08-29 23:12:14,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:12:14,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:12:14,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2116,2129] [2023-08-29 23:12:14,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:12:14,624 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:12:14,649 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c[2116,2129] [2023-08-29 23:12:14,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:12:14,666 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:12:14,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14 WrapperNode [2023-08-29 23:12:14,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:12:14,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:12:14,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:12:14,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:12:14,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,720 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-08-29 23:12:14,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:12:14,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:12:14,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:12:14,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:12:14,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,761 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:12:14,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:12:14,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:12:14,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:12:14,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (1/1) ... [2023-08-29 23:12:14,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:12:14,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:12:14,801 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) [2023-08-29 23:12:14,821 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 [2023-08-29 23:12:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:12:14,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:12:14,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:12:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:12:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:12:14,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 23:12:14,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 23:12:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 23:12:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:12:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 23:12:14,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:12:14,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:12:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 23:12:14,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:12:14,851 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 23:12:14,956 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:12:14,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:12:15,295 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:12:15,302 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:12:15,306 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-29 23:12:15,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:12:15 BoogieIcfgContainer [2023-08-29 23:12:15,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:12:15,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:12:15,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:12:15,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:12:15,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:12:14" (1/3) ... [2023-08-29 23:12:15,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443f3031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:12:15, skipping insertion in model container [2023-08-29 23:12:15,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:14" (2/3) ... [2023-08-29 23:12:15,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443f3031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:12:15, skipping insertion in model container [2023-08-29 23:12:15,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:12:15" (3/3) ... [2023-08-29 23:12:15,319 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-08-29 23:12:15,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:12:15,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 23:12:15,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:12:15,448 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 23:12:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 121 transitions, 266 flow [2023-08-29 23:12:15,573 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2023-08-29 23:12:15,574 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:15,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 118 events. 7/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-29 23:12:15,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 121 transitions, 266 flow [2023-08-29 23:12:15,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:15,589 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:12:15,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:15,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:15,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:15,656 INFO L130 PetriNetUnfolder]: 7/114 cut-off events. [2023-08-29 23:12:15,656 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:15,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 7/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-29 23:12:15,659 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2023-08-29 23:12:18,978 INFO L134 LiptonReduction]: Checked pairs total: 1766 [2023-08-29 23:12:18,978 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-29 23:12:18,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:12:18,997 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;@1d549988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:12:18,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 23:12:18,998 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 23:12:18,999 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:12:18,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:18,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 23:12:19,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:19,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 449, now seen corresponding path program 1 times [2023-08-29 23:12:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176504498] [2023-08-29 23:12:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:19,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176504498] [2023-08-29 23:12:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176504498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:19,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 23:12:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940399014] [2023-08-29 23:12:19,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:19,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 23:12:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 23:12:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 23:12:19,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 232 [2023-08-29 23:12:19,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:19,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 232 [2023-08-29 23:12:19,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:19,278 INFO L130 PetriNetUnfolder]: 556/763 cut-off events. [2023-08-29 23:12:19,279 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 23:12:19,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 763 events. 556/763 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2742 event pairs, 252 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 1210. Up to 752 conditions per place. [2023-08-29 23:12:19,286 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-29 23:12:19,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 140 flow [2023-08-29 23:12:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 23:12:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 23:12:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2023-08-29 23:12:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2023-08-29 23:12:19,304 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2023-08-29 23:12:19,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2023-08-29 23:12:19,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:19,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2023-08-29 23:12:19,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,318 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,320 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 88 flow. Second operand 2 states and 252 transitions. [2023-08-29 23:12:19,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 140 flow [2023-08-29 23:12:19,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 23:12:19,326 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 70 flow [2023-08-29 23:12:19,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-29 23:12:19,331 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-29 23:12:19,332 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 70 flow [2023-08-29 23:12:19,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:19,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:12:19,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 23:12:19,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:19,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash 440291, now seen corresponding path program 1 times [2023-08-29 23:12:19,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070745868] [2023-08-29 23:12:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:19,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:19,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070745868] [2023-08-29 23:12:19,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070745868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:19,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:19,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:19,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799102382] [2023-08-29 23:12:19,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:19,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:19,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 232 [2023-08-29 23:12:19,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:19,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 232 [2023-08-29 23:12:19,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:19,733 INFO L130 PetriNetUnfolder]: 529/724 cut-off events. [2023-08-29 23:12:19,733 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:19,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 724 events. 529/724 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2568 event pairs, 239 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 1449. Up to 712 conditions per place. [2023-08-29 23:12:19,738 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-29 23:12:19,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 120 flow [2023-08-29 23:12:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-29 23:12:19,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47270114942528735 [2023-08-29 23:12:19,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-29 23:12:19,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-29 23:12:19,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:19,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-29 23:12:19,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,761 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 329 transitions. [2023-08-29 23:12:19,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 120 flow [2023-08-29 23:12:19,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 23:12:19,762 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2023-08-29 23:12:19,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-29 23:12:19,763 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-29 23:12:19,764 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2023-08-29 23:12:19,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:19,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:12:19,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 23:12:19,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:19,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 440290, now seen corresponding path program 1 times [2023-08-29 23:12:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:19,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324853463] [2023-08-29 23:12:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324853463] [2023-08-29 23:12:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324853463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:19,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:19,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000375803] [2023-08-29 23:12:19,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:19,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:19,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:19,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:19,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 232 [2023-08-29 23:12:19,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:19,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 232 [2023-08-29 23:12:19,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:19,959 INFO L130 PetriNetUnfolder]: 502/685 cut-off events. [2023-08-29 23:12:19,959 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:19,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 685 events. 502/685 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2367 event pairs, 226 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 1372. Up to 673 conditions per place. [2023-08-29 23:12:19,963 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-29 23:12:19,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 114 flow [2023-08-29 23:12:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-29 23:12:19,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49137931034482757 [2023-08-29 23:12:19,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-29 23:12:19,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-29 23:12:19,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:19,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-29 23:12:19,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,970 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 342 transitions. [2023-08-29 23:12:19,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 114 flow [2023-08-29 23:12:19,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:19,971 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 65 flow [2023-08-29 23:12:19,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-08-29 23:12:19,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-29 23:12:19,972 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 65 flow [2023-08-29 23:12:19,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:19,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:19,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:12:19,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 23:12:19,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:19,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash 423127422, now seen corresponding path program 1 times [2023-08-29 23:12:19,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:19,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158439590] [2023-08-29 23:12:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:19,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158439590] [2023-08-29 23:12:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158439590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349209499] [2023-08-29 23:12:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:20,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:20,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2023-08-29 23:12:20,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:20,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2023-08-29 23:12:20,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:20,163 INFO L130 PetriNetUnfolder]: 476/647 cut-off events. [2023-08-29 23:12:20,163 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:20,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 647 events. 476/647 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2206 event pairs, 214 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 1297. Up to 635 conditions per place. [2023-08-29 23:12:20,167 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-29 23:12:20,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 107 flow [2023-08-29 23:12:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-29 23:12:20,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2023-08-29 23:12:20,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-29 23:12:20,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-29 23:12:20,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:20,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-29 23:12:20,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,173 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 328 transitions. [2023-08-29 23:12:20,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 107 flow [2023-08-29 23:12:20,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:20,174 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 62 flow [2023-08-29 23:12:20,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-29 23:12:20,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2023-08-29 23:12:20,176 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 62 flow [2023-08-29 23:12:20,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:20,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:12:20,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 23:12:20,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:20,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 423127421, now seen corresponding path program 1 times [2023-08-29 23:12:20,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105879979] [2023-08-29 23:12:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:20,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:20,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105879979] [2023-08-29 23:12:20,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105879979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:20,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:20,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:20,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524030318] [2023-08-29 23:12:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:20,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:20,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 232 [2023-08-29 23:12:20,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:20,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 232 [2023-08-29 23:12:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:20,320 INFO L130 PetriNetUnfolder]: 450/609 cut-off events. [2023-08-29 23:12:20,321 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:20,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 609 events. 450/609 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2039 event pairs, 202 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 1222. Up to 597 conditions per place. [2023-08-29 23:12:20,325 INFO L137 encePairwiseOnDemand]: 229/232 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-29 23:12:20,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 100 flow [2023-08-29 23:12:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-29 23:12:20,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640804597701149 [2023-08-29 23:12:20,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-29 23:12:20,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-29 23:12:20,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:20,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-29 23:12:20,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,330 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 62 flow. Second operand 3 states and 323 transitions. [2023-08-29 23:12:20,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 100 flow [2023-08-29 23:12:20,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:20,331 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 59 flow [2023-08-29 23:12:20,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-29 23:12:20,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 23:12:20,332 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 59 flow [2023-08-29 23:12:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:20,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:20,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 23:12:20,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:20,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1396432710, now seen corresponding path program 1 times [2023-08-29 23:12:20,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:20,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142702078] [2023-08-29 23:12:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:20,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:20,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142702078] [2023-08-29 23:12:20,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142702078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:20,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:20,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:20,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069332831] [2023-08-29 23:12:20,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:20,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:20,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:20,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:20,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2023-08-29 23:12:20,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:20,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2023-08-29 23:12:20,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:20,458 INFO L130 PetriNetUnfolder]: 351/483 cut-off events. [2023-08-29 23:12:20,458 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:20,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 483 events. 351/483 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1558 event pairs, 157 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 971. Up to 471 conditions per place. [2023-08-29 23:12:20,461 INFO L137 encePairwiseOnDemand]: 230/232 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-29 23:12:20,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 97 flow [2023-08-29 23:12:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 324 transitions. [2023-08-29 23:12:20,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2023-08-29 23:12:20,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 324 transitions. [2023-08-29 23:12:20,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 324 transitions. [2023-08-29 23:12:20,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:20,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 324 transitions. [2023-08-29 23:12:20,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,467 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 59 flow. Second operand 3 states and 324 transitions. [2023-08-29 23:12:20,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 97 flow [2023-08-29 23:12:20,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:20,468 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 58 flow [2023-08-29 23:12:20,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-29 23:12:20,469 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 23:12:20,469 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 58 flow [2023-08-29 23:12:20,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:20,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:20,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 23:12:20,470 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:20,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:20,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1396432712, now seen corresponding path program 1 times [2023-08-29 23:12:20,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:20,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806392865] [2023-08-29 23:12:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:20,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:20,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:20,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806392865] [2023-08-29 23:12:20,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806392865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:20,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:20,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:12:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283083103] [2023-08-29 23:12:20,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:12:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:12:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:12:20,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 232 [2023-08-29 23:12:20,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:20,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 232 [2023-08-29 23:12:20,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:20,715 INFO L130 PetriNetUnfolder]: 252/357 cut-off events. [2023-08-29 23:12:20,715 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:20,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 357 events. 252/357 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1098 event pairs, 112 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 720. Up to 345 conditions per place. [2023-08-29 23:12:20,717 INFO L137 encePairwiseOnDemand]: 230/232 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-29 23:12:20,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 94 flow [2023-08-29 23:12:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-29 23:12:20,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42528735632183906 [2023-08-29 23:12:20,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-29 23:12:20,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-29 23:12:20,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:20,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-29 23:12:20,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,722 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 58 flow. Second operand 3 states and 296 transitions. [2023-08-29 23:12:20,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 94 flow [2023-08-29 23:12:20,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:20,723 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 57 flow [2023-08-29 23:12:20,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-29 23:12:20,724 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 23:12:20,724 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 57 flow [2023-08-29 23:12:20,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:20,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:20,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:20,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 23:12:20,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:20,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1966083998, now seen corresponding path program 1 times [2023-08-29 23:12:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567882467] [2023-08-29 23:12:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:20,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:21,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:21,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567882467] [2023-08-29 23:12:21,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567882467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:21,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:21,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125981092] [2023-08-29 23:12:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:21,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:21,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 232 [2023-08-29 23:12:21,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:21,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 232 [2023-08-29 23:12:21,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:21,198 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2023-08-29 23:12:21,198 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 23:12:21,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 506 events. 359/506 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1628 event pairs, 39 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 1028. Up to 421 conditions per place. [2023-08-29 23:12:21,201 INFO L137 encePairwiseOnDemand]: 227/232 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-29 23:12:21,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 164 flow [2023-08-29 23:12:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-29 23:12:21,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129310344827587 [2023-08-29 23:12:21,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-29 23:12:21,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-29 23:12:21,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:21,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-29 23:12:21,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,206 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 57 flow. Second operand 3 states and 357 transitions. [2023-08-29 23:12:21,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 164 flow [2023-08-29 23:12:21,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:21,208 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2023-08-29 23:12:21,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-29 23:12:21,209 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-29 23:12:21,209 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 82 flow [2023-08-29 23:12:21,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:21,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:21,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 23:12:21,210 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:21,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash -451109797, now seen corresponding path program 1 times [2023-08-29 23:12:21,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:21,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016586909] [2023-08-29 23:12:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016586909] [2023-08-29 23:12:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016586909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:12:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57296627] [2023-08-29 23:12:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:12:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:12:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:12:21,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 232 [2023-08-29 23:12:21,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:21,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 232 [2023-08-29 23:12:21,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:21,779 INFO L130 PetriNetUnfolder]: 638/974 cut-off events. [2023-08-29 23:12:21,779 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-08-29 23:12:21,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 974 events. 638/974 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3838 event pairs, 158 based on Foata normal form. 18/992 useless extension candidates. Maximal degree in co-relation 2343. Up to 394 conditions per place. [2023-08-29 23:12:21,783 INFO L137 encePairwiseOnDemand]: 224/232 looper letters, 71 selfloop transitions, 8 changer transitions 10/89 dead transitions. [2023-08-29 23:12:21,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 89 transitions, 440 flow [2023-08-29 23:12:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:12:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:12:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 754 transitions. [2023-08-29 23:12:21,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-29 23:12:21,786 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 754 transitions. [2023-08-29 23:12:21,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 754 transitions. [2023-08-29 23:12:21,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:21,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 754 transitions. [2023-08-29 23:12:21,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.71428571428571) internal successors, (754), 7 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,791 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 82 flow. Second operand 7 states and 754 transitions. [2023-08-29 23:12:21,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 89 transitions, 440 flow [2023-08-29 23:12:21,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 89 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:21,794 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 145 flow [2023-08-29 23:12:21,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-08-29 23:12:21,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-29 23:12:21,795 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 145 flow [2023-08-29 23:12:21,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:21,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:21,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:21,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 23:12:21,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:21,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1630608704, now seen corresponding path program 1 times [2023-08-29 23:12:21,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:21,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828541169] [2023-08-29 23:12:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:22,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828541169] [2023-08-29 23:12:22,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828541169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307900693] [2023-08-29 23:12:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:22,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:12:22,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:12:22,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:12:22,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 23:12:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:22,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:12:22,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:12:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:22,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:12:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:22,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307900693] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:22,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:12:22,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 9 [2023-08-29 23:12:22,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427036173] [2023-08-29 23:12:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:22,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:12:22,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:22,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:12:22,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:12:22,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-29 23:12:22,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:22,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:22,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-29 23:12:22,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:22,792 INFO L130 PetriNetUnfolder]: 815/1235 cut-off events. [2023-08-29 23:12:22,792 INFO L131 PetriNetUnfolder]: For 1371/1417 co-relation queries the response was YES. [2023-08-29 23:12:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 1235 events. 815/1235 cut-off events. For 1371/1417 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5260 event pairs, 193 based on Foata normal form. 47/1265 useless extension candidates. Maximal degree in co-relation 3869. Up to 398 conditions per place. [2023-08-29 23:12:22,800 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 94 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2023-08-29 23:12:22,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 112 transitions, 668 flow [2023-08-29 23:12:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:12:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:12:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 887 transitions. [2023-08-29 23:12:22,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47790948275862066 [2023-08-29 23:12:22,804 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 887 transitions. [2023-08-29 23:12:22,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 887 transitions. [2023-08-29 23:12:22,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:22,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 887 transitions. [2023-08-29 23:12:22,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.875) internal successors, (887), 8 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:22,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:22,809 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:22,809 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 145 flow. Second operand 8 states and 887 transitions. [2023-08-29 23:12:22,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 112 transitions, 668 flow [2023-08-29 23:12:22,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 112 transitions, 640 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-29 23:12:22,815 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 270 flow [2023-08-29 23:12:22,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=270, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-29 23:12:22,816 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-29 23:12:22,816 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 270 flow [2023-08-29 23:12:22,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:22,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:22,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:22,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 23:12:23,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-29 23:12:23,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:23,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1885073951, now seen corresponding path program 1 times [2023-08-29 23:12:23,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54158566] [2023-08-29 23:12:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:23,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54158566] [2023-08-29 23:12:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54158566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:23,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:23,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:12:23,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429931131] [2023-08-29 23:12:23,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:12:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:12:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:12:23,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 232 [2023-08-29 23:12:23,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 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) [2023-08-29 23:12:23,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:23,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 232 [2023-08-29 23:12:23,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:23,638 INFO L130 PetriNetUnfolder]: 1126/1709 cut-off events. [2023-08-29 23:12:23,639 INFO L131 PetriNetUnfolder]: For 4606/4606 co-relation queries the response was YES. [2023-08-29 23:12:23,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6513 conditions, 1709 events. 1126/1709 cut-off events. For 4606/4606 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7472 event pairs, 276 based on Foata normal form. 20/1729 useless extension candidates. Maximal degree in co-relation 6498. Up to 728 conditions per place. [2023-08-29 23:12:23,650 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 99 selfloop transitions, 29 changer transitions 13/141 dead transitions. [2023-08-29 23:12:23,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 141 transitions, 1066 flow [2023-08-29 23:12:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 23:12:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 23:12:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1057 transitions. [2023-08-29 23:12:23,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556034482758621 [2023-08-29 23:12:23,654 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1057 transitions. [2023-08-29 23:12:23,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1057 transitions. [2023-08-29 23:12:23,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:23,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1057 transitions. [2023-08-29 23:12:23,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.7) internal successors, (1057), 10 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:23,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 232.0) internal successors, (2552), 11 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:23,661 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 232.0) internal successors, (2552), 11 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:23,661 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 270 flow. Second operand 10 states and 1057 transitions. [2023-08-29 23:12:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 141 transitions, 1066 flow [2023-08-29 23:12:23,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 141 transitions, 1052 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-29 23:12:23,672 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 511 flow [2023-08-29 23:12:23,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=511, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-08-29 23:12:23,673 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-29 23:12:23,673 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 511 flow [2023-08-29 23:12:23,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 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) [2023-08-29 23:12:23,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:23,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:23,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 23:12:23,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:23,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:23,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2144658137, now seen corresponding path program 2 times [2023-08-29 23:12:23,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:23,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544731450] [2023-08-29 23:12:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:23,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:23,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:23,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544731450] [2023-08-29 23:12:23,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544731450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:23,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349217422] [2023-08-29 23:12:23,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:12:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:12:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:12:23,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:12:23,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 23:12:23,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:12:23,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:12:23,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 23:12:23,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:12:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:24,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:12:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:24,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349217422] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:24,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:12:24,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-29 23:12:24,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870231037] [2023-08-29 23:12:24,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:24,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:12:24,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:24,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:12:24,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-29 23:12:24,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-29 23:12:24,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 511 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:24,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:24,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-29 23:12:24,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:24,769 INFO L130 PetriNetUnfolder]: 1482/2209 cut-off events. [2023-08-29 23:12:24,770 INFO L131 PetriNetUnfolder]: For 9998/10096 co-relation queries the response was YES. [2023-08-29 23:12:24,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10489 conditions, 2209 events. 1482/2209 cut-off events. For 9998/10096 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9945 event pairs, 356 based on Foata normal form. 102/2295 useless extension candidates. Maximal degree in co-relation 10466. Up to 755 conditions per place. [2023-08-29 23:12:24,790 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 117 selfloop transitions, 26 changer transitions 3/148 dead transitions. [2023-08-29 23:12:24,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 148 transitions, 1303 flow [2023-08-29 23:12:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:12:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:12:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 889 transitions. [2023-08-29 23:12:24,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47898706896551724 [2023-08-29 23:12:24,794 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 889 transitions. [2023-08-29 23:12:24,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 889 transitions. [2023-08-29 23:12:24,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:24,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 889 transitions. [2023-08-29 23:12:24,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:24,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:24,799 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:24,799 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 511 flow. Second operand 8 states and 889 transitions. [2023-08-29 23:12:24,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 148 transitions, 1303 flow [2023-08-29 23:12:24,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 148 transitions, 1221 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-29 23:12:24,821 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 683 flow [2023-08-29 23:12:24,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-08-29 23:12:24,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-08-29 23:12:24,822 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 683 flow [2023-08-29 23:12:24,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:24,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:24,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:24,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 23:12:25,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-29 23:12:25,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:25,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash -127297912, now seen corresponding path program 2 times [2023-08-29 23:12:25,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:25,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091225847] [2023-08-29 23:12:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091225847] [2023-08-29 23:12:25,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091225847] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322594511] [2023-08-29 23:12:25,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:12:25,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:12:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:12:25,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:12:25,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 23:12:25,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:12:25,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:12:25,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 23:12:25,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:12:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:25,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:12:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:26,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322594511] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:12:26,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:12:26,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-08-29 23:12:26,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436226594] [2023-08-29 23:12:26,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:12:26,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 23:12:26,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:26,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 23:12:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-08-29 23:12:26,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 232 [2023-08-29 23:12:26,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 683 flow. Second operand has 14 states, 14 states have (on average 96.28571428571429) internal successors, (1348), 14 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:26,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:26,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 232 [2023-08-29 23:12:26,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:27,842 INFO L130 PetriNetUnfolder]: 2313/3566 cut-off events. [2023-08-29 23:12:27,842 INFO L131 PetriNetUnfolder]: For 21403/21403 co-relation queries the response was YES. [2023-08-29 23:12:27,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17805 conditions, 3566 events. 2313/3566 cut-off events. For 21403/21403 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18289 event pairs, 384 based on Foata normal form. 56/3622 useless extension candidates. Maximal degree in co-relation 17778. Up to 1292 conditions per place. [2023-08-29 23:12:27,875 INFO L137 encePairwiseOnDemand]: 222/232 looper letters, 226 selfloop transitions, 76 changer transitions 1/303 dead transitions. [2023-08-29 23:12:27,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 303 transitions, 2854 flow [2023-08-29 23:12:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-29 23:12:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-29 23:12:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2106 transitions. [2023-08-29 23:12:27,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538793103448276 [2023-08-29 23:12:27,881 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2106 transitions. [2023-08-29 23:12:27,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2106 transitions. [2023-08-29 23:12:27,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:27,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2106 transitions. [2023-08-29 23:12:27,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 105.3) internal successors, (2106), 20 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:27,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 232.0) internal successors, (4872), 21 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:27,894 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 232.0) internal successors, (4872), 21 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:27,894 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 683 flow. Second operand 20 states and 2106 transitions. [2023-08-29 23:12:27,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 303 transitions, 2854 flow [2023-08-29 23:12:28,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 303 transitions, 2784 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-08-29 23:12:28,017 INFO L231 Difference]: Finished difference. Result has 111 places, 133 transitions, 1643 flow [2023-08-29 23:12:28,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1643, PETRI_PLACES=111, PETRI_TRANSITIONS=133} [2023-08-29 23:12:28,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-08-29 23:12:28,018 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 133 transitions, 1643 flow [2023-08-29 23:12:28,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 96.28571428571429) internal successors, (1348), 14 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:28,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:28,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:28,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 23:12:28,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:12:28,225 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:28,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash 985135421, now seen corresponding path program 3 times [2023-08-29 23:12:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829283] [2023-08-29 23:12:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:28,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:28,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829283] [2023-08-29 23:12:28,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829283] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:28,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437009688] [2023-08-29 23:12:28,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:12:28,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:12:28,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:12:28,406 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:12:28,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 23:12:28,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 23:12:28,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:12:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 23:12:28,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:12:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:28,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:12:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437009688] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:28,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:12:28,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 9 [2023-08-29 23:12:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820516131] [2023-08-29 23:12:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:12:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:12:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:12:28,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-29 23:12:28,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 133 transitions, 1643 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:28,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:28,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-29 23:12:28,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:29,537 INFO L130 PetriNetUnfolder]: 2593/3980 cut-off events. [2023-08-29 23:12:29,537 INFO L131 PetriNetUnfolder]: For 51122/51289 co-relation queries the response was YES. [2023-08-29 23:12:29,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25874 conditions, 3980 events. 2593/3980 cut-off events. For 51122/51289 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20741 event pairs, 608 based on Foata normal form. 145/4106 useless extension candidates. Maximal degree in co-relation 25831. Up to 1410 conditions per place. [2023-08-29 23:12:29,581 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 164 selfloop transitions, 61 changer transitions 0/228 dead transitions. [2023-08-29 23:12:29,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 228 transitions, 2877 flow [2023-08-29 23:12:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:12:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:12:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 889 transitions. [2023-08-29 23:12:29,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47898706896551724 [2023-08-29 23:12:29,585 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 889 transitions. [2023-08-29 23:12:29,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 889 transitions. [2023-08-29 23:12:29,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:29,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 889 transitions. [2023-08-29 23:12:29,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:29,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:29,590 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:29,590 INFO L175 Difference]: Start difference. First operand has 111 places, 133 transitions, 1643 flow. Second operand 8 states and 889 transitions. [2023-08-29 23:12:29,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 228 transitions, 2877 flow [2023-08-29 23:12:29,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 228 transitions, 2659 flow, removed 109 selfloop flow, removed 0 redundant places. [2023-08-29 23:12:29,710 INFO L231 Difference]: Finished difference. Result has 122 places, 151 transitions, 1936 flow [2023-08-29 23:12:29,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1936, PETRI_PLACES=122, PETRI_TRANSITIONS=151} [2023-08-29 23:12:29,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2023-08-29 23:12:29,711 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 151 transitions, 1936 flow [2023-08-29 23:12:29,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:29,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:29,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:29,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 23:12:29,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:12:29,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:29,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash -457190798, now seen corresponding path program 3 times [2023-08-29 23:12:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:29,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600282525] [2023-08-29 23:12:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:29,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:30,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600282525] [2023-08-29 23:12:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600282525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:30,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:30,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:12:30,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555311871] [2023-08-29 23:12:30,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:30,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:12:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:30,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:12:30,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:12:30,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 232 [2023-08-29 23:12:30,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 151 transitions, 1936 flow. Second operand has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 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) [2023-08-29 23:12:30,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:30,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 232 [2023-08-29 23:12:30,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:30,999 INFO L130 PetriNetUnfolder]: 2671/4113 cut-off events. [2023-08-29 23:12:31,000 INFO L131 PetriNetUnfolder]: For 61193/61193 co-relation queries the response was YES. [2023-08-29 23:12:31,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27204 conditions, 4113 events. 2671/4113 cut-off events. For 61193/61193 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 21506 event pairs, 936 based on Foata normal form. 4/4117 useless extension candidates. Maximal degree in co-relation 27156. Up to 2106 conditions per place. [2023-08-29 23:12:31,045 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 171 selfloop transitions, 38 changer transitions 12/221 dead transitions. [2023-08-29 23:12:31,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 221 transitions, 2992 flow [2023-08-29 23:12:31,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:12:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:12:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 848 transitions. [2023-08-29 23:12:31,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45689655172413796 [2023-08-29 23:12:31,048 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 848 transitions. [2023-08-29 23:12:31,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 848 transitions. [2023-08-29 23:12:31,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:31,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 848 transitions. [2023-08-29 23:12:31,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:31,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:31,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:31,054 INFO L175 Difference]: Start difference. First operand has 122 places, 151 transitions, 1936 flow. Second operand 8 states and 848 transitions. [2023-08-29 23:12:31,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 221 transitions, 2992 flow [2023-08-29 23:12:31,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 221 transitions, 2898 flow, removed 34 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:31,212 INFO L231 Difference]: Finished difference. Result has 130 places, 154 transitions, 2003 flow [2023-08-29 23:12:31,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2003, PETRI_PLACES=130, PETRI_TRANSITIONS=154} [2023-08-29 23:12:31,212 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2023-08-29 23:12:31,213 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 154 transitions, 2003 flow [2023-08-29 23:12:31,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 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) [2023-08-29 23:12:31,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:31,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:31,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 23:12:31,214 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:31,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1252591096, now seen corresponding path program 4 times [2023-08-29 23:12:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853323645] [2023-08-29 23:12:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:31,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853323645] [2023-08-29 23:12:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853323645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:12:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560409165] [2023-08-29 23:12:31,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 23:12:31,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:12:31,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:12:31,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:12:31,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 23:12:31,475 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 23:12:31,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:12:31,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 23:12:31,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:12:31,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:31,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:12:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:37,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560409165] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:12:37,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:12:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2023-08-29 23:12:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501229240] [2023-08-29 23:12:37,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:12:37,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:12:37,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:37,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:12:37,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=160, Unknown=1, NotChecked=0, Total=210 [2023-08-29 23:12:39,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:41,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:43,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:45,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:47,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:49,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:51,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:53,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:55,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:57,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:12:59,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:01,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:03,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:05,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:07,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:09,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:10,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 232 [2023-08-29 23:13:10,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 154 transitions, 2003 flow. Second operand has 15 states, 15 states have (on average 93.26666666666667) internal successors, (1399), 15 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:10,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:10,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 232 [2023-08-29 23:13:10,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:12,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:14,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:16,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:19,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:21,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:22,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:24,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:26,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:28,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:30,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:32,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:34,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:36,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:39,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:41,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:43,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:45,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:47,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:49,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:51,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:53,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:55,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:57,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:13:59,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:01,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:03,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:05,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:07,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:10,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:12,398 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((aux_mod_~b~0_35 Int)) (let ((.cse0 (mod (+ 4294967295 (* 4294967295 aux_mod_~b~0_35)) 4294967296))) (or (<= .cse0 (mod c_thread2Thread1of1ForFork0_~i~1 4294967296)) (< (mod (+ c_thread2Thread1of1ForFork0_~i~1 1) 4294967296) .cse0) (< (+ (mod c_thread3Thread1of1ForFork2_~i~2 4294967296) aux_mod_~b~0_35) 4294967295) (>= aux_mod_~b~0_35 4294967296)))) (<= (+ (* (div c_~a~0 4294967296) 4294967296) 1) c_~a~0)) is different from false [2023-08-29 23:14:14,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:17,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:19,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:21,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:23,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:25,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:27,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:29,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:31,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:33,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:35,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:37,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:39,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:41,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:43,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:45,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:47,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:49,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:51,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:53,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:14:55,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:34,727 WARN L222 SmtUtils]: Spent 14.33s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 23:15:36,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:38,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:40,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:43,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:45,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:49,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:51,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:53,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:54,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:56,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:15:58,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:00,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:02,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:04,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:06,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:08,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:10,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:12,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:14,715 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_thread3Thread1of1ForFork2_~i~2 4294967296))) (and (< .cse0 (+ c_~b~0 4294967296 (* (div (+ (- 1) (- c_~b~0)) 4294967296) 4294967296))) (forall ((aux_mod_~b~0_35 Int)) (let ((.cse1 (mod (+ 4294967295 (* 4294967295 aux_mod_~b~0_35)) 4294967296))) (or (<= .cse1 (mod c_thread2Thread1of1ForFork0_~i~1 4294967296)) (< (mod (+ c_thread2Thread1of1ForFork0_~i~1 1) 4294967296) .cse1) (< (+ .cse0 aux_mod_~b~0_35) 4294967295) (>= aux_mod_~b~0_35 4294967296)))))) is different from false [2023-08-29 23:16:19,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:21,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:23,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:25,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:27,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:29,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:31,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:33,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:35,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:37,490 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_thread2Thread1of1ForFork0_~i~1 4294967296)) (.cse0 (mod c_thread3Thread1of1ForFork2_~i~2 4294967296))) (and (or (< .cse0 (+ c_~b~0 4294967296 (* (div (+ (- 1) (- c_~b~0)) 4294967296) 4294967296))) (< .cse1 (mod c_~b~0 4294967296))) (forall ((aux_mod_~b~0_35 Int)) (let ((.cse2 (mod (+ 4294967295 (* 4294967295 aux_mod_~b~0_35)) 4294967296))) (or (<= .cse2 .cse1) (< (mod (+ c_thread2Thread1of1ForFork0_~i~1 1) 4294967296) .cse2) (< (+ .cse0 aux_mod_~b~0_35) 4294967295) (>= aux_mod_~b~0_35 4294967296)))) (<= (+ (* (div c_~a~0 4294967296) 4294967296) 1) c_~a~0))) is different from false [2023-08-29 23:16:39,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:41,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:48,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:50,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:52,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:16:54,237 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_thread3Thread1of1ForFork2_~i~2 4294967296))) (and (< .cse0 (+ c_~b~0 4294967296 (* (div (+ (- 1) (- c_~b~0)) 4294967296) 4294967296))) (forall ((aux_mod_~b~0_35 Int)) (let ((.cse1 (mod (+ 4294967295 (* 4294967295 aux_mod_~b~0_35)) 4294967296))) (or (<= .cse1 (mod c_thread2Thread1of1ForFork0_~i~1 4294967296)) (< (mod (+ c_thread2Thread1of1ForFork0_~i~1 1) 4294967296) .cse1) (< (+ .cse0 aux_mod_~b~0_35) 4294967295) (>= aux_mod_~b~0_35 4294967296)))) (<= (+ (* (div c_~a~0 4294967296) 4294967296) 1) c_~a~0))) is different from false [2023-08-29 23:16:58,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:00,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:01,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:03,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:06,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:09,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:11,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:13,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:15,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:17,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:19,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:21,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:23,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:25,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:27,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:17:27,857 INFO L130 PetriNetUnfolder]: 5274/8186 cut-off events. [2023-08-29 23:17:27,857 INFO L131 PetriNetUnfolder]: For 119512/119512 co-relation queries the response was YES. [2023-08-29 23:17:27,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53865 conditions, 8186 events. 5274/8186 cut-off events. For 119512/119512 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 49126 event pairs, 585 based on Foata normal form. 52/8238 useless extension candidates. Maximal degree in co-relation 53815. Up to 2900 conditions per place. [2023-08-29 23:17:27,948 INFO L137 encePairwiseOnDemand]: 218/232 looper letters, 311 selfloop transitions, 304 changer transitions 3/618 dead transitions. [2023-08-29 23:17:27,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 618 transitions, 8132 flow [2023-08-29 23:17:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-29 23:17:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-29 23:17:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3140 transitions. [2023-08-29 23:17:27,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43659621802002224 [2023-08-29 23:17:27,956 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3140 transitions. [2023-08-29 23:17:27,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3140 transitions. [2023-08-29 23:17:27,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:17:27,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3140 transitions. [2023-08-29 23:17:27,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 101.29032258064517) internal successors, (3140), 31 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:27,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 232.0) internal successors, (7424), 32 states have internal predecessors, (7424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:27,989 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 232.0) internal successors, (7424), 32 states have internal predecessors, (7424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:27,989 INFO L175 Difference]: Start difference. First operand has 130 places, 154 transitions, 2003 flow. Second operand 31 states and 3140 transitions. [2023-08-29 23:17:27,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 618 transitions, 8132 flow [2023-08-29 23:17:28,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 618 transitions, 7841 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-29 23:17:28,377 INFO L231 Difference]: Finished difference. Result has 183 places, 392 transitions, 6592 flow [2023-08-29 23:17:28,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=6592, PETRI_PLACES=183, PETRI_TRANSITIONS=392} [2023-08-29 23:17:28,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2023-08-29 23:17:28,378 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 392 transitions, 6592 flow [2023-08-29 23:17:28,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 93.26666666666667) internal successors, (1399), 15 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:28,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:28,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:28,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 23:17:28,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 23:17:28,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:17:28,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:28,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1220860868, now seen corresponding path program 5 times [2023-08-29 23:17:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:28,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230960865] [2023-08-29 23:17:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:28,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:28,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230960865] [2023-08-29 23:17:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230960865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639730034] [2023-08-29 23:17:28,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 23:17:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:28,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:17:28,817 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:17:28,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 23:17:28,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:17:28,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:17:28,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 23:17:28,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:17:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:29,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:17:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:29,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639730034] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:29,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:17:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-29 23:17:29,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54450979] [2023-08-29 23:17:29,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:17:29,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:17:29,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:29,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:17:29,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-29 23:17:29,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-29 23:17:29,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 392 transitions, 6592 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:29,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:29,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-29 23:17:29,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:17:31,526 INFO L130 PetriNetUnfolder]: 6076/9510 cut-off events. [2023-08-29 23:17:31,527 INFO L131 PetriNetUnfolder]: For 343739/343878 co-relation queries the response was YES. [2023-08-29 23:17:31,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96287 conditions, 9510 events. 6076/9510 cut-off events. For 343739/343878 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 59512 event pairs, 1055 based on Foata normal form. 129/9584 useless extension candidates. Maximal degree in co-relation 96210. Up to 4685 conditions per place. [2023-08-29 23:17:31,672 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 440 selfloop transitions, 224 changer transitions 3/685 dead transitions. [2023-08-29 23:17:31,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 685 transitions, 12424 flow [2023-08-29 23:17:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:17:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:17:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 885 transitions. [2023-08-29 23:17:31,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47683189655172414 [2023-08-29 23:17:31,678 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 885 transitions. [2023-08-29 23:17:31,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 885 transitions. [2023-08-29 23:17:31,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:17:31,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 885 transitions. [2023-08-29 23:17:31,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.625) internal successors, (885), 8 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:31,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:31,685 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:31,685 INFO L175 Difference]: Start difference. First operand has 183 places, 392 transitions, 6592 flow. Second operand 8 states and 885 transitions. [2023-08-29 23:17:31,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 685 transitions, 12424 flow [2023-08-29 23:17:33,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 685 transitions, 10764 flow, removed 806 selfloop flow, removed 1 redundant places. [2023-08-29 23:17:33,026 INFO L231 Difference]: Finished difference. Result has 195 places, 465 transitions, 7902 flow [2023-08-29 23:17:33,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7902, PETRI_PLACES=195, PETRI_TRANSITIONS=465} [2023-08-29 23:17:33,027 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 153 predicate places. [2023-08-29 23:17:33,027 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 465 transitions, 7902 flow [2023-08-29 23:17:33,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:33,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:33,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:33,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 23:17:33,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-29 23:17:33,237 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:17:33,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1628123365, now seen corresponding path program 4 times [2023-08-29 23:17:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800209501] [2023-08-29 23:17:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800209501] [2023-08-29 23:17:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800209501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609259307] [2023-08-29 23:17:33,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 23:17:33,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:33,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:17:33,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:17:33,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 23:17:33,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 23:17:33,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:17:33,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-29 23:17:33,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:17:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:33,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:17:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:33,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609259307] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:33,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:17:33,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 16 [2023-08-29 23:17:33,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708405850] [2023-08-29 23:17:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:17:33,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:17:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:17:33,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-29 23:17:33,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-29 23:17:33,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 465 transitions, 7902 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:33,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:33,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-29 23:17:33,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:17:36,404 INFO L130 PetriNetUnfolder]: 6168/9613 cut-off events. [2023-08-29 23:17:36,405 INFO L131 PetriNetUnfolder]: For 339881/340129 co-relation queries the response was YES. [2023-08-29 23:17:36,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93600 conditions, 9613 events. 6168/9613 cut-off events. For 339881/340129 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 60013 event pairs, 1812 based on Foata normal form. 125/9710 useless extension candidates. Maximal degree in co-relation 93517. Up to 4851 conditions per place. [2023-08-29 23:17:36,569 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 383 selfloop transitions, 125 changer transitions 0/522 dead transitions. [2023-08-29 23:17:36,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 522 transitions, 9565 flow [2023-08-29 23:17:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:17:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:17:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 664 transitions. [2023-08-29 23:17:36,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2023-08-29 23:17:36,574 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 664 transitions. [2023-08-29 23:17:36,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 664 transitions. [2023-08-29 23:17:36,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:17:36,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 664 transitions. [2023-08-29 23:17:36,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:36,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:36,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:36,578 INFO L175 Difference]: Start difference. First operand has 195 places, 465 transitions, 7902 flow. Second operand 6 states and 664 transitions. [2023-08-29 23:17:36,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 522 transitions, 9565 flow [2023-08-29 23:17:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 522 transitions, 9505 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-08-29 23:17:37,460 INFO L231 Difference]: Finished difference. Result has 203 places, 467 transitions, 8170 flow [2023-08-29 23:17:37,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=7856, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8170, PETRI_PLACES=203, PETRI_TRANSITIONS=467} [2023-08-29 23:17:37,461 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 161 predicate places. [2023-08-29 23:17:37,461 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 467 transitions, 8170 flow [2023-08-29 23:17:37,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:37,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:37,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:37,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 23:17:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:37,667 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:17:37,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 947611889, now seen corresponding path program 5 times [2023-08-29 23:17:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:37,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440347379] [2023-08-29 23:17:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:37,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440347379] [2023-08-29 23:17:37,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440347379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114231190] [2023-08-29 23:17:37,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 23:17:37,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:37,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:17:37,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:17:37,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 23:17:37,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:17:37,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:17:37,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:17:37,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:17:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:38,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:17:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114231190] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:38,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:17:38,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-29 23:17:38,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550265089] [2023-08-29 23:17:38,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:17:38,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:17:38,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:38,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:17:38,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-29 23:17:38,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-29 23:17:38,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 467 transitions, 8170 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:38,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:38,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-29 23:17:38,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:17:40,329 INFO L130 PetriNetUnfolder]: 6152/9597 cut-off events. [2023-08-29 23:17:40,329 INFO L131 PetriNetUnfolder]: For 305010/305258 co-relation queries the response was YES. [2023-08-29 23:17:40,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91442 conditions, 9597 events. 6152/9597 cut-off events. For 305010/305258 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 59864 event pairs, 1775 based on Foata normal form. 133/9702 useless extension candidates. Maximal degree in co-relation 91355. Up to 4851 conditions per place. [2023-08-29 23:17:40,435 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 408 selfloop transitions, 141 changer transitions 0/563 dead transitions. [2023-08-29 23:17:40,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 563 transitions, 10220 flow [2023-08-29 23:17:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:17:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:17:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2023-08-29 23:17:40,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755747126436782 [2023-08-29 23:17:40,438 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2023-08-29 23:17:40,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2023-08-29 23:17:40,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:17:40,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2023-08-29 23:17:40,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:40,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:40,442 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:40,442 INFO L175 Difference]: Start difference. First operand has 203 places, 467 transitions, 8170 flow. Second operand 6 states and 662 transitions. [2023-08-29 23:17:40,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 563 transitions, 10220 flow [2023-08-29 23:17:41,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 563 transitions, 9992 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-29 23:17:41,174 INFO L231 Difference]: Finished difference. Result has 209 places, 471 transitions, 8349 flow [2023-08-29 23:17:41,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=7945, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8349, PETRI_PLACES=209, PETRI_TRANSITIONS=471} [2023-08-29 23:17:41,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2023-08-29 23:17:41,174 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 471 transitions, 8349 flow [2023-08-29 23:17:41,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:41,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:41,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:41,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 23:17:41,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:41,377 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:17:41,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash 975317519, now seen corresponding path program 6 times [2023-08-29 23:17:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:41,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749484369] [2023-08-29 23:17:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:41,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749484369] [2023-08-29 23:17:41,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749484369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410273176] [2023-08-29 23:17:41,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 23:17:41,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:17:41,585 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:17:41,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 23:17:41,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-29 23:17:41,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:17:41,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 23:17:41,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:17:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:41,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:17:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410273176] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:42,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:17:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-29 23:17:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556552305] [2023-08-29 23:17:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:17:42,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:17:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:17:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-29 23:17:42,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 232 [2023-08-29 23:17:42,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 471 transitions, 8349 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:42,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:42,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 232 [2023-08-29 23:17:42,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:17:44,129 INFO L130 PetriNetUnfolder]: 6136/9561 cut-off events. [2023-08-29 23:17:44,129 INFO L131 PetriNetUnfolder]: For 307159/307407 co-relation queries the response was YES. [2023-08-29 23:17:44,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91869 conditions, 9561 events. 6136/9561 cut-off events. For 307159/307407 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 59512 event pairs, 1807 based on Foata normal form. 129/9662 useless extension candidates. Maximal degree in co-relation 91779. Up to 4851 conditions per place. [2023-08-29 23:17:44,239 INFO L137 encePairwiseOnDemand]: 225/232 looper letters, 406 selfloop transitions, 141 changer transitions 0/561 dead transitions. [2023-08-29 23:17:44,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 561 transitions, 10328 flow [2023-08-29 23:17:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:17:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:17:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2023-08-29 23:17:44,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47413793103448276 [2023-08-29 23:17:44,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2023-08-29 23:17:44,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2023-08-29 23:17:44,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:17:44,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2023-08-29 23:17:44,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:44,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:44,245 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:44,245 INFO L175 Difference]: Start difference. First operand has 209 places, 471 transitions, 8349 flow. Second operand 6 states and 660 transitions. [2023-08-29 23:17:44,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 561 transitions, 10328 flow [2023-08-29 23:17:45,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 561 transitions, 10089 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 23:17:45,068 INFO L231 Difference]: Finished difference. Result has 214 places, 472 transitions, 8425 flow [2023-08-29 23:17:45,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=8110, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8425, PETRI_PLACES=214, PETRI_TRANSITIONS=472} [2023-08-29 23:17:45,069 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2023-08-29 23:17:45,069 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 472 transitions, 8425 flow [2023-08-29 23:17:45,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:45,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:45,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:45,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-29 23:17:45,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:45,270 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:17:45,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash 547539218, now seen corresponding path program 6 times [2023-08-29 23:17:45,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:45,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587025808] [2023-08-29 23:17:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:45,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:45,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587025808] [2023-08-29 23:17:45,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587025808] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:45,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117097095] [2023-08-29 23:17:45,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 23:17:45,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:45,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:17:45,413 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:17:45,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 23:17:45,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-29 23:17:45,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:17:45,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 23:17:45,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:17:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:45,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:17:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:45,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117097095] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:17:45,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:17:45,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-29 23:17:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944933875] [2023-08-29 23:17:45,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:17:45,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-29 23:17:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-29 23:17:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-29 23:17:46,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 232 [2023-08-29 23:17:46,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 472 transitions, 8425 flow. Second operand has 16 states, 16 states have (on average 95.6875) internal successors, (1531), 16 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:46,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:46,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 232 [2023-08-29 23:17:46,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:17:48,639 INFO L130 PetriNetUnfolder]: 6679/10558 cut-off events. [2023-08-29 23:17:48,639 INFO L131 PetriNetUnfolder]: For 325499/325499 co-relation queries the response was YES. [2023-08-29 23:17:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100250 conditions, 10558 events. 6679/10558 cut-off events. For 325499/325499 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 68400 event pairs, 1136 based on Foata normal form. 52/10610 useless extension candidates. Maximal degree in co-relation 100158. Up to 5170 conditions per place. [2023-08-29 23:17:48,761 INFO L137 encePairwiseOnDemand]: 222/232 looper letters, 452 selfloop transitions, 338 changer transitions 6/796 dead transitions. [2023-08-29 23:17:48,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 796 transitions, 14048 flow [2023-08-29 23:17:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:17:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:17:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1246 transitions. [2023-08-29 23:17:48,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475574712643678 [2023-08-29 23:17:48,764 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1246 transitions. [2023-08-29 23:17:48,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1246 transitions. [2023-08-29 23:17:48,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:17:48,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1246 transitions. [2023-08-29 23:17:48,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 103.83333333333333) internal successors, (1246), 12 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:48,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 232.0) internal successors, (3016), 13 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:48,770 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 232.0) internal successors, (3016), 13 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:48,770 INFO L175 Difference]: Start difference. First operand has 214 places, 472 transitions, 8425 flow. Second operand 12 states and 1246 transitions. [2023-08-29 23:17:48,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 796 transitions, 14048 flow [2023-08-29 23:17:49,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 796 transitions, 13761 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-29 23:17:49,749 INFO L231 Difference]: Finished difference. Result has 225 places, 556 transitions, 10421 flow [2023-08-29 23:17:49,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=8144, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10421, PETRI_PLACES=225, PETRI_TRANSITIONS=556} [2023-08-29 23:17:49,750 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2023-08-29 23:17:49,750 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 556 transitions, 10421 flow [2023-08-29 23:17:49,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.6875) internal successors, (1531), 16 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:49,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:49,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:49,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 23:17:49,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-29 23:17:49,951 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:17:49,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1161413526, now seen corresponding path program 7 times [2023-08-29 23:17:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:49,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862871225] [2023-08-29 23:17:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:50,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:50,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862871225] [2023-08-29 23:17:50,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862871225] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:50,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499831560] [2023-08-29 23:17:50,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 23:17:50,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:50,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:17:50,097 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:17:50,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 23:17:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:50,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 23:17:50,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:17:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:50,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:17:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:50,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499831560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:17:50,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:17:50,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-08-29 23:17:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070742394] [2023-08-29 23:17:50,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:17:50,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:17:50,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:17:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-08-29 23:17:51,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 232 [2023-08-29 23:17:51,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 556 transitions, 10421 flow. Second operand has 15 states, 15 states have (on average 96.13333333333334) internal successors, (1442), 15 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:51,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:51,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 232 [2023-08-29 23:17:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:17:55,203 INFO L130 PetriNetUnfolder]: 8626/13648 cut-off events. [2023-08-29 23:17:55,203 INFO L131 PetriNetUnfolder]: For 443851/443851 co-relation queries the response was YES. [2023-08-29 23:17:55,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133956 conditions, 13648 events. 8626/13648 cut-off events. For 443851/443851 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 92849 event pairs, 1255 based on Foata normal form. 89/13737 useless extension candidates. Maximal degree in co-relation 133861. Up to 6724 conditions per place. [2023-08-29 23:17:55,380 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 717 selfloop transitions, 269 changer transitions 1/987 dead transitions. [2023-08-29 23:17:55,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 987 transitions, 19000 flow [2023-08-29 23:17:55,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-29 23:17:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-29 23:17:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1879 transitions. [2023-08-29 23:17:55,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499521072796935 [2023-08-29 23:17:55,383 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1879 transitions. [2023-08-29 23:17:55,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1879 transitions. [2023-08-29 23:17:55,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:17:55,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1879 transitions. [2023-08-29 23:17:55,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 104.38888888888889) internal successors, (1879), 18 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:55,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 232.0) internal successors, (4408), 19 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:55,392 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 232.0) internal successors, (4408), 19 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:55,392 INFO L175 Difference]: Start difference. First operand has 225 places, 556 transitions, 10421 flow. Second operand 18 states and 1879 transitions. [2023-08-29 23:17:55,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 987 transitions, 19000 flow [2023-08-29 23:17:56,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 987 transitions, 18919 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-29 23:17:56,825 INFO L231 Difference]: Finished difference. Result has 251 places, 622 transitions, 12678 flow [2023-08-29 23:17:56,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=10364, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12678, PETRI_PLACES=251, PETRI_TRANSITIONS=622} [2023-08-29 23:17:56,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 209 predicate places. [2023-08-29 23:17:56,826 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 622 transitions, 12678 flow [2023-08-29 23:17:56,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 96.13333333333334) internal successors, (1442), 15 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:56,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:56,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:56,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-29 23:17:57,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-29 23:17:57,027 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:17:57,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1112134376, now seen corresponding path program 8 times [2023-08-29 23:17:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:57,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295007641] [2023-08-29 23:17:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:57,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:57,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:57,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295007641] [2023-08-29 23:17:57,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295007641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:17:57,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:17:57,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:17:57,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867844351] [2023-08-29 23:17:57,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:17:57,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:17:57,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:57,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:17:57,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:17:57,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 232 [2023-08-29 23:17:57,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 622 transitions, 12678 flow. Second operand has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:57,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:57,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 232 [2023-08-29 23:17:57,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:18:00,725 INFO L130 PetriNetUnfolder]: 8721/13882 cut-off events. [2023-08-29 23:18:00,725 INFO L131 PetriNetUnfolder]: For 505905/505905 co-relation queries the response was YES. [2023-08-29 23:18:00,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142780 conditions, 13882 events. 8721/13882 cut-off events. For 505905/505905 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 95591 event pairs, 1549 based on Foata normal form. 52/13934 useless extension candidates. Maximal degree in co-relation 142673. Up to 6865 conditions per place. [2023-08-29 23:18:00,920 INFO L137 encePairwiseOnDemand]: 224/232 looper letters, 653 selfloop transitions, 276 changer transitions 9/938 dead transitions. [2023-08-29 23:18:00,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 938 transitions, 19655 flow [2023-08-29 23:18:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:18:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:18:00,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 740 transitions. [2023-08-29 23:18:00,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45566502463054187 [2023-08-29 23:18:00,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 740 transitions. [2023-08-29 23:18:00,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 740 transitions. [2023-08-29 23:18:00,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:18:00,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 740 transitions. [2023-08-29 23:18:00,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.71428571428571) internal successors, (740), 7 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:00,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:00,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:00,926 INFO L175 Difference]: Start difference. First operand has 251 places, 622 transitions, 12678 flow. Second operand 7 states and 740 transitions. [2023-08-29 23:18:00,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 938 transitions, 19655 flow [2023-08-29 23:18:02,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 938 transitions, 19138 flow, removed 117 selfloop flow, removed 7 redundant places. [2023-08-29 23:18:02,745 INFO L231 Difference]: Finished difference. Result has 255 places, 651 transitions, 13984 flow [2023-08-29 23:18:02,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=12359, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13984, PETRI_PLACES=255, PETRI_TRANSITIONS=651} [2023-08-29 23:18:02,746 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2023-08-29 23:18:02,746 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 651 transitions, 13984 flow [2023-08-29 23:18:02,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:02,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:18:02,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:18:02,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 23:18:02,747 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:18:02,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:18:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1509588982, now seen corresponding path program 9 times [2023-08-29 23:18:02,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:18:02,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120166123] [2023-08-29 23:18:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:18:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:18:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:18:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:02,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:18:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120166123] [2023-08-29 23:18:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120166123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:18:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576137602] [2023-08-29 23:18:02,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:18:02,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:18:02,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:18:02,945 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:18:02,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-29 23:18:03,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 23:18:03,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:18:03,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 23:18:03,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:18:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:03,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:18:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576137602] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:18:03,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:18:03,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-08-29 23:18:03,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261918546] [2023-08-29 23:18:03,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:18:03,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:18:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:18:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:18:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-08-29 23:18:03,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 232 [2023-08-29 23:18:03,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 651 transitions, 13984 flow. Second operand has 15 states, 15 states have (on average 96.6) internal successors, (1449), 15 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:03,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:18:03,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 232 [2023-08-29 23:18:03,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:18:08,344 INFO L130 PetriNetUnfolder]: 9103/14540 cut-off events. [2023-08-29 23:18:08,344 INFO L131 PetriNetUnfolder]: For 571937/571937 co-relation queries the response was YES. [2023-08-29 23:18:08,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154499 conditions, 14540 events. 9103/14540 cut-off events. For 571937/571937 co-relation queries the response was YES. Maximal size of possible extension queue 839. Compared 101439 event pairs, 1297 based on Foata normal form. 36/14576 useless extension candidates. Maximal degree in co-relation 154390. Up to 7175 conditions per place. [2023-08-29 23:18:08,557 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 781 selfloop transitions, 302 changer transitions 1/1084 dead transitions. [2023-08-29 23:18:08,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1084 transitions, 23478 flow [2023-08-29 23:18:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-29 23:18:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-29 23:18:08,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1884 transitions. [2023-08-29 23:18:08,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511494252873563 [2023-08-29 23:18:08,562 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1884 transitions. [2023-08-29 23:18:08,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1884 transitions. [2023-08-29 23:18:08,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:18:08,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1884 transitions. [2023-08-29 23:18:08,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 104.66666666666667) internal successors, (1884), 18 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:08,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 232.0) internal successors, (4408), 19 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:08,569 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 232.0) internal successors, (4408), 19 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:08,569 INFO L175 Difference]: Start difference. First operand has 255 places, 651 transitions, 13984 flow. Second operand 18 states and 1884 transitions. [2023-08-29 23:18:08,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1084 transitions, 23478 flow [2023-08-29 23:18:10,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 1084 transitions, 22815 flow, removed 179 selfloop flow, removed 2 redundant places. [2023-08-29 23:18:10,728 INFO L231 Difference]: Finished difference. Result has 282 places, 694 transitions, 15491 flow [2023-08-29 23:18:10,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=13545, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15491, PETRI_PLACES=282, PETRI_TRANSITIONS=694} [2023-08-29 23:18:10,729 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2023-08-29 23:18:10,729 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 694 transitions, 15491 flow [2023-08-29 23:18:10,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 96.6) internal successors, (1449), 15 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:10,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:18:10,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:18:10,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-29 23:18:10,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-29 23:18:10,935 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:18:10,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:18:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1193788032, now seen corresponding path program 10 times [2023-08-29 23:18:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:18:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648906525] [2023-08-29 23:18:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:18:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:18:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:18:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:11,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:18:11,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648906525] [2023-08-29 23:18:11,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648906525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:18:11,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:18:11,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:18:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84583418] [2023-08-29 23:18:11,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:18:11,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:18:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:18:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:18:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:18:11,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 232 [2023-08-29 23:18:11,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 694 transitions, 15491 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:11,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:18:11,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 232 [2023-08-29 23:18:11,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:18:15,609 INFO L130 PetriNetUnfolder]: 9783/15909 cut-off events. [2023-08-29 23:18:15,609 INFO L131 PetriNetUnfolder]: For 727529/727529 co-relation queries the response was YES. [2023-08-29 23:18:15,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174264 conditions, 15909 events. 9783/15909 cut-off events. For 727529/727529 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 114840 event pairs, 2509 based on Foata normal form. 72/15981 useless extension candidates. Maximal degree in co-relation 174143. Up to 7879 conditions per place. [2023-08-29 23:18:15,863 INFO L137 encePairwiseOnDemand]: 224/232 looper letters, 603 selfloop transitions, 384 changer transitions 10/997 dead transitions. [2023-08-29 23:18:15,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 997 transitions, 22639 flow [2023-08-29 23:18:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:18:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:18:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 756 transitions. [2023-08-29 23:18:15,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2023-08-29 23:18:15,865 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 756 transitions. [2023-08-29 23:18:15,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 756 transitions. [2023-08-29 23:18:15,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:18:15,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 756 transitions. [2023-08-29 23:18:15,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.0) internal successors, (756), 7 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) [2023-08-29 23:18:15,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:15,868 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:15,868 INFO L175 Difference]: Start difference. First operand has 282 places, 694 transitions, 15491 flow. Second operand 7 states and 756 transitions. [2023-08-29 23:18:15,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 997 transitions, 22639 flow [2023-08-29 23:18:18,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 997 transitions, 22022 flow, removed 86 selfloop flow, removed 3 redundant places. [2023-08-29 23:18:18,747 INFO L231 Difference]: Finished difference. Result has 290 places, 780 transitions, 18457 flow [2023-08-29 23:18:18,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=15004, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18457, PETRI_PLACES=290, PETRI_TRANSITIONS=780} [2023-08-29 23:18:18,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2023-08-29 23:18:18,748 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 780 transitions, 18457 flow [2023-08-29 23:18:18,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:18,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:18:18,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:18:18,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-29 23:18:18,749 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:18:18,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:18:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash -80910900, now seen corresponding path program 11 times [2023-08-29 23:18:18,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:18:18,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472963196] [2023-08-29 23:18:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:18:18,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:18:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:18:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:18:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472963196] [2023-08-29 23:18:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472963196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:18:18,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:18:18,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:18:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625965990] [2023-08-29 23:18:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:18:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:18:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:18:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:18:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:18:18,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 232 [2023-08-29 23:18:18,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 780 transitions, 18457 flow. Second operand has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:18,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:18:18,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 232 [2023-08-29 23:18:18,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:18:23,555 INFO L130 PetriNetUnfolder]: 9687/15652 cut-off events. [2023-08-29 23:18:23,555 INFO L131 PetriNetUnfolder]: For 756166/756166 co-relation queries the response was YES. [2023-08-29 23:18:23,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177263 conditions, 15652 events. 9687/15652 cut-off events. For 756166/756166 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 111795 event pairs, 2887 based on Foata normal form. 24/15676 useless extension candidates. Maximal degree in co-relation 177137. Up to 8165 conditions per place. [2023-08-29 23:18:23,956 INFO L137 encePairwiseOnDemand]: 224/232 looper letters, 619 selfloop transitions, 275 changer transitions 8/902 dead transitions. [2023-08-29 23:18:23,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 902 transitions, 22121 flow [2023-08-29 23:18:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:18:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:18:23,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 748 transitions. [2023-08-29 23:18:23,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605911330049261 [2023-08-29 23:18:23,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 748 transitions. [2023-08-29 23:18:23,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 748 transitions. [2023-08-29 23:18:23,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:18:23,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 748 transitions. [2023-08-29 23:18:23,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:23,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:23,961 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:23,961 INFO L175 Difference]: Start difference. First operand has 290 places, 780 transitions, 18457 flow. Second operand 7 states and 748 transitions. [2023-08-29 23:18:23,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 902 transitions, 22121 flow [2023-08-29 23:18:26,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 902 transitions, 21809 flow, removed 156 selfloop flow, removed 1 redundant places. [2023-08-29 23:18:26,975 INFO L231 Difference]: Finished difference. Result has 297 places, 781 transitions, 18860 flow [2023-08-29 23:18:26,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=18191, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18860, PETRI_PLACES=297, PETRI_TRANSITIONS=781} [2023-08-29 23:18:26,976 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2023-08-29 23:18:26,976 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 781 transitions, 18860 flow [2023-08-29 23:18:26,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:26,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:18:26,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:18:26,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-29 23:18:26,977 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:18:26,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:18:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1334008104, now seen corresponding path program 12 times [2023-08-29 23:18:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:18:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950151056] [2023-08-29 23:18:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:18:26,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:18:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:18:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:18:27,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950151056] [2023-08-29 23:18:27,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950151056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:18:27,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:18:27,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:18:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38355999] [2023-08-29 23:18:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:18:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:18:27,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:18:27,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:18:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:18:27,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 232 [2023-08-29 23:18:27,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 781 transitions, 18860 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:27,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:18:27,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 232 [2023-08-29 23:18:27,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:18:31,962 INFO L130 PetriNetUnfolder]: 9660/15800 cut-off events. [2023-08-29 23:18:31,963 INFO L131 PetriNetUnfolder]: For 747632/747632 co-relation queries the response was YES. [2023-08-29 23:18:32,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177607 conditions, 15800 events. 9660/15800 cut-off events. For 747632/747632 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 115217 event pairs, 2954 based on Foata normal form. 68/15868 useless extension candidates. Maximal degree in co-relation 177478. Up to 8165 conditions per place. [2023-08-29 23:18:32,242 INFO L137 encePairwiseOnDemand]: 224/232 looper letters, 628 selfloop transitions, 337 changer transitions 10/975 dead transitions. [2023-08-29 23:18:32,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 975 transitions, 23941 flow [2023-08-29 23:18:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:18:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:18:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 758 transitions. [2023-08-29 23:18:32,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667487684729064 [2023-08-29 23:18:32,244 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 758 transitions. [2023-08-29 23:18:32,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 758 transitions. [2023-08-29 23:18:32,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:18:32,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 758 transitions. [2023-08-29 23:18:32,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 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) [2023-08-29 23:18:32,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:32,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:32,248 INFO L175 Difference]: Start difference. First operand has 297 places, 781 transitions, 18860 flow. Second operand 7 states and 758 transitions. [2023-08-29 23:18:32,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 975 transitions, 23941 flow [2023-08-29 23:18:35,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 975 transitions, 23310 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-29 23:18:35,672 INFO L231 Difference]: Finished difference. Result has 301 places, 812 transitions, 20320 flow [2023-08-29 23:18:35,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=18295, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20320, PETRI_PLACES=301, PETRI_TRANSITIONS=812} [2023-08-29 23:18:35,674 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2023-08-29 23:18:35,674 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 812 transitions, 20320 flow [2023-08-29 23:18:35,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:35,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:18:35,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:18:35,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-29 23:18:35,675 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:18:35,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:18:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash 101477699, now seen corresponding path program 7 times [2023-08-29 23:18:35,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:18:35,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653426394] [2023-08-29 23:18:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:18:35,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:18:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:18:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:18:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653426394] [2023-08-29 23:18:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653426394] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:18:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540212508] [2023-08-29 23:18:35,849 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 23:18:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:18:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:18:35,850 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:18:35,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-29 23:18:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:18:35,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:18:35,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:18:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:36,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:18:38,380 WARN L839 $PredicateComparison]: unable to prove that (forall ((aux_mod_~a~0_21 Int)) (or (let ((.cse0 (* 4294967295 aux_mod_~a~0_21))) (< (+ (* 4294967296 (div .cse0 4294967296)) (mod c_thread2Thread1of1ForFork0_~i~1 4294967296)) .cse0)) (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)))) is different from false [2023-08-29 23:18:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-29 23:18:38,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540212508] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:18:38,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:18:38,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2023-08-29 23:18:38,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808345007] [2023-08-29 23:18:38,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:18:38,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 23:18:38,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:18:38,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 23:18:38,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=82, Unknown=1, NotChecked=18, Total=132 [2023-08-29 23:18:38,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 232 [2023-08-29 23:18:38,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 812 transitions, 20320 flow. Second operand has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:38,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:18:38,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 232 [2023-08-29 23:18:38,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:18:40,755 WARN L839 $PredicateComparison]: unable to prove that (and (<= (div (+ c_~b~0 c_~a~0) 4294967296) (div (+ (- 1) c_~b~0 c_~a~0) 4294967296)) (forall ((aux_mod_~a~0_21 Int)) (or (let ((.cse0 (* 4294967295 aux_mod_~a~0_21))) (< (+ (* 4294967296 (div .cse0 4294967296)) (mod c_thread2Thread1of1ForFork0_~i~1 4294967296)) .cse0)) (>= aux_mod_~a~0_21 4294967296) (<= aux_mod_~a~0_21 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296))))) is different from false [2023-08-29 23:18:46,961 INFO L130 PetriNetUnfolder]: 11807/19084 cut-off events. [2023-08-29 23:18:46,961 INFO L131 PetriNetUnfolder]: For 920394/920394 co-relation queries the response was YES. [2023-08-29 23:18:47,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217769 conditions, 19084 events. 11807/19084 cut-off events. For 920394/920394 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 140437 event pairs, 2628 based on Foata normal form. 26/19110 useless extension candidates. Maximal degree in co-relation 217638. Up to 9665 conditions per place. [2023-08-29 23:18:47,502 INFO L137 encePairwiseOnDemand]: 218/232 looper letters, 592 selfloop transitions, 598 changer transitions 4/1194 dead transitions. [2023-08-29 23:18:47,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1194 transitions, 29034 flow [2023-08-29 23:18:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 23:18:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 23:18:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1767 transitions. [2023-08-29 23:18:47,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802231237322515 [2023-08-29 23:18:47,505 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1767 transitions. [2023-08-29 23:18:47,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1767 transitions. [2023-08-29 23:18:47,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:18:47,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1767 transitions. [2023-08-29 23:18:47,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 103.94117647058823) internal successors, (1767), 17 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:47,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 232.0) internal successors, (4176), 18 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:47,512 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 232.0) internal successors, (4176), 18 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:47,512 INFO L175 Difference]: Start difference. First operand has 301 places, 812 transitions, 20320 flow. Second operand 17 states and 1767 transitions. [2023-08-29 23:18:47,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1194 transitions, 29034 flow [2023-08-29 23:18:51,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1194 transitions, 28609 flow, removed 111 selfloop flow, removed 2 redundant places. [2023-08-29 23:18:51,422 INFO L231 Difference]: Finished difference. Result has 326 places, 935 transitions, 24995 flow [2023-08-29 23:18:51,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=19931, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=24995, PETRI_PLACES=326, PETRI_TRANSITIONS=935} [2023-08-29 23:18:51,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2023-08-29 23:18:51,423 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 935 transitions, 24995 flow [2023-08-29 23:18:51,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 94.0) internal successors, (1128), 12 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:51,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:18:51,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:18:51,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-29 23:18:51,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-29 23:18:51,629 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:18:51,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:18:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1360521338, now seen corresponding path program 13 times [2023-08-29 23:18:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:18:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652507423] [2023-08-29 23:18:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:18:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:18:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:18:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:18:51,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:18:51,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652507423] [2023-08-29 23:18:51,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652507423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:18:51,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:18:51,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:18:51,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330016964] [2023-08-29 23:18:51,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:18:51,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:18:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:18:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:18:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:18:51,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 232 [2023-08-29 23:18:51,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 935 transitions, 24995 flow. Second operand has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:51,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:18:51,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 232 [2023-08-29 23:18:51,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:18:58,704 INFO L130 PetriNetUnfolder]: 11654/18846 cut-off events. [2023-08-29 23:18:58,705 INFO L131 PetriNetUnfolder]: For 1104950/1104950 co-relation queries the response was YES. [2023-08-29 23:18:59,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240088 conditions, 18846 events. 11654/18846 cut-off events. For 1104950/1104950 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 138502 event pairs, 3469 based on Foata normal form. 94/18940 useless extension candidates. Maximal degree in co-relation 239947. Up to 11049 conditions per place. [2023-08-29 23:18:59,468 INFO L137 encePairwiseOnDemand]: 224/232 looper letters, 714 selfloop transitions, 357 changer transitions 5/1076 dead transitions. [2023-08-29 23:18:59,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1076 transitions, 29204 flow [2023-08-29 23:18:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:18:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:18:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 753 transitions. [2023-08-29 23:18:59,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46366995073891626 [2023-08-29 23:18:59,469 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 753 transitions. [2023-08-29 23:18:59,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 753 transitions. [2023-08-29 23:18:59,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:18:59,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 753 transitions. [2023-08-29 23:18:59,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:59,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:59,472 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:18:59,472 INFO L175 Difference]: Start difference. First operand has 326 places, 935 transitions, 24995 flow. Second operand 7 states and 753 transitions. [2023-08-29 23:18:59,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1076 transitions, 29204 flow [2023-08-29 23:19:04,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1076 transitions, 28239 flow, removed 338 selfloop flow, removed 3 redundant places. [2023-08-29 23:19:04,484 INFO L231 Difference]: Finished difference. Result has 333 places, 947 transitions, 25384 flow [2023-08-29 23:19:04,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=24035, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=934, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25384, PETRI_PLACES=333, PETRI_TRANSITIONS=947} [2023-08-29 23:19:04,486 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2023-08-29 23:19:04,486 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 947 transitions, 25384 flow [2023-08-29 23:19:04,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:19:04,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:19:04,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:19:04,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-29 23:19:04,487 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:19:04,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:19:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -781104801, now seen corresponding path program 8 times [2023-08-29 23:19:04,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:19:04,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742931167] [2023-08-29 23:19:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:19:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:19:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:19:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:19:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:19:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742931167] [2023-08-29 23:19:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742931167] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:19:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861376310] [2023-08-29 23:19:04,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:19:04,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:19:04,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:19:04,621 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:19:04,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-29 23:19:04,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:19:04,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:19:04,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 23:19:04,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:19:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:19:04,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:19:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:19:09,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861376310] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:19:09,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:19:09,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-08-29 23:19:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099148612] [2023-08-29 23:19:09,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:19:09,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-29 23:19:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:19:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-29 23:19:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=179, Unknown=1, NotChecked=0, Total=240 [2023-08-29 23:19:11,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:13,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:13,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 232 [2023-08-29 23:19:13,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 947 transitions, 25384 flow. Second operand has 16 states, 16 states have (on average 95.5) internal successors, (1528), 16 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:19:13,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:19:13,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 232 [2023-08-29 23:19:13,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:19:15,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:17,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:19,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:21,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:23,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:25,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:27,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:29,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:31,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:33,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:35,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:37,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:39,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:41,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:43,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:45,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:47,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:50,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:52,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:54,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:56,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:19:58,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:00,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:02,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:04,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:06,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:08,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:10,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:12,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:14,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:16,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:18,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:20,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:22,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:24,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:26,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:28,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:30,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:32,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:34,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:36,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:38,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:40,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:42,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:44,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:47,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:49,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:20:51,122 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (.cse1 (mod c_thread2Thread1of1ForFork0_~i~1 4294967296))) (and (or (< .cse0 (mod c_~a~0 4294967296)) (let ((.cse2 (* 4294967295 c_~a~0))) (< (+ .cse1 (* (div .cse2 4294967296) 4294967296)) .cse2))) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse3 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 .cse0) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse3) (let ((.cse4 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ .cse1 (* (div .cse4 4294967296) 4294967296)) .cse4)) (< .cse3 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-08-29 23:21:07,095 WARN L222 SmtUtils]: Spent 15.47s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 23:21:09,622 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_thread2Thread1of1ForFork0_~i~1 4294967296))) (and (let ((.cse1 (* 4294967295 c_~a~0))) (< (+ .cse0 (* (div (+ (mod c_thread3Thread1of1ForFork2_~i~2 4294967296) .cse1) 4294967296) 4294967296)) .cse1)) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse2 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse2) (let ((.cse3 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ .cse0 (* (div .cse3 4294967296) 4294967296)) .cse3)) (< .cse2 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-08-29 23:21:11,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:13,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:15,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:17,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:19,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:21,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:23,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:25,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:27,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:29,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:31,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:33,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:35,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:37,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:39,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:41,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:44,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:46,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:51,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:53,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:55,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:57,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:21:59,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:22:03,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:22:05,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:22:07,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:22:10,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:22:12,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:22:14,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:22:15,631 INFO L130 PetriNetUnfolder]: 14420/23124 cut-off events. [2023-08-29 23:22:15,632 INFO L131 PetriNetUnfolder]: For 1338378/1338378 co-relation queries the response was YES. [2023-08-29 23:22:16,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292498 conditions, 23124 events. 14420/23124 cut-off events. For 1338378/1338378 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 173596 event pairs, 3230 based on Foata normal form. 46/23170 useless extension candidates. Maximal degree in co-relation 292355. Up to 11448 conditions per place. [2023-08-29 23:22:16,665 INFO L137 encePairwiseOnDemand]: 216/232 looper letters, 943 selfloop transitions, 491 changer transitions 1/1435 dead transitions. [2023-08-29 23:22:16,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1435 transitions, 37946 flow [2023-08-29 23:22:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-29 23:22:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-29 23:22:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2422 transitions. [2023-08-29 23:22:16,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45389805097451275 [2023-08-29 23:22:16,668 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2422 transitions. [2023-08-29 23:22:16,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2422 transitions. [2023-08-29 23:22:16,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:22:16,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2422 transitions. [2023-08-29 23:22:16,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 105.30434782608695) internal successors, (2422), 23 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:16,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 232.0) internal successors, (5568), 24 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:16,676 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 232.0) internal successors, (5568), 24 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:16,676 INFO L175 Difference]: Start difference. First operand has 333 places, 947 transitions, 25384 flow. Second operand 23 states and 2422 transitions. [2023-08-29 23:22:16,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1435 transitions, 37946 flow [2023-08-29 23:22:24,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1435 transitions, 37184 flow, removed 127 selfloop flow, removed 3 redundant places. [2023-08-29 23:22:24,053 INFO L231 Difference]: Finished difference. Result has 365 places, 1124 transitions, 30647 flow [2023-08-29 23:22:24,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=24705, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=30647, PETRI_PLACES=365, PETRI_TRANSITIONS=1124} [2023-08-29 23:22:24,055 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2023-08-29 23:22:24,055 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 1124 transitions, 30647 flow [2023-08-29 23:22:24,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.5) internal successors, (1528), 16 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:24,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:22:24,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:22:24,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-29 23:22:24,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:22:24,261 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:22:24,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:22:24,262 INFO L85 PathProgramCache]: Analyzing trace with hash 77149377, now seen corresponding path program 9 times [2023-08-29 23:22:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:22:24,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89233418] [2023-08-29 23:22:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:22:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:22:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:22:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:22:24,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:22:24,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89233418] [2023-08-29 23:22:24,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89233418] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:22:24,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348550532] [2023-08-29 23:22:24,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:22:24,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:22:24,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:22:24,425 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:22:24,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-29 23:22:24,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 23:22:24,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:22:24,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 23:22:24,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:22:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:22:24,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:22:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:22:24,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348550532] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:22:24,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:22:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 12 [2023-08-29 23:22:24,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391782305] [2023-08-29 23:22:24,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:22:24,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 23:22:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:22:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 23:22:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-29 23:22:25,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 232 [2023-08-29 23:22:25,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1124 transitions, 30647 flow. Second operand has 12 states, 12 states have (on average 96.41666666666667) internal successors, (1157), 12 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:25,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:22:25,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 232 [2023-08-29 23:22:25,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:22:39,551 INFO L130 PetriNetUnfolder]: 17076/27401 cut-off events. [2023-08-29 23:22:39,551 INFO L131 PetriNetUnfolder]: For 1815339/1815339 co-relation queries the response was YES. [2023-08-29 23:22:40,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374353 conditions, 27401 events. 17076/27401 cut-off events. For 1815339/1815339 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 211718 event pairs, 2149 based on Foata normal form. 103/27504 useless extension candidates. Maximal degree in co-relation 374197. Up to 13748 conditions per place. [2023-08-29 23:22:40,611 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 991 selfloop transitions, 780 changer transitions 6/1777 dead transitions. [2023-08-29 23:22:40,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1777 transitions, 46514 flow [2023-08-29 23:22:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-29 23:22:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-29 23:22:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1923 transitions. [2023-08-29 23:22:40,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46048850574712646 [2023-08-29 23:22:40,613 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1923 transitions. [2023-08-29 23:22:40,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1923 transitions. [2023-08-29 23:22:40,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:22:40,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1923 transitions. [2023-08-29 23:22:40,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 106.83333333333333) internal successors, (1923), 18 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:40,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 232.0) internal successors, (4408), 19 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:40,618 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 232.0) internal successors, (4408), 19 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:40,618 INFO L175 Difference]: Start difference. First operand has 365 places, 1124 transitions, 30647 flow. Second operand 18 states and 1923 transitions. [2023-08-29 23:22:40,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 1777 transitions, 46514 flow [2023-08-29 23:22:50,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1777 transitions, 45182 flow, removed 633 selfloop flow, removed 2 redundant places. [2023-08-29 23:22:50,979 INFO L231 Difference]: Finished difference. Result has 392 places, 1278 transitions, 36758 flow [2023-08-29 23:22:50,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=29741, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=637, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=36758, PETRI_PLACES=392, PETRI_TRANSITIONS=1278} [2023-08-29 23:22:50,980 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2023-08-29 23:22:50,980 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 1278 transitions, 36758 flow [2023-08-29 23:22:50,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 96.41666666666667) internal successors, (1157), 12 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:22:50,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:22:50,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:22:50,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-29 23:22:51,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:22:51,185 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:22:51,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:22:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1438216769, now seen corresponding path program 2 times [2023-08-29 23:22:51,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:22:51,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074684817] [2023-08-29 23:22:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:22:51,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:22:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:22:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:22:51,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:22:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074684817] [2023-08-29 23:22:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074684817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:22:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175873743] [2023-08-29 23:22:51,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:22:51,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:22:51,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:22:51,357 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:22:51,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-29 23:22:51,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:22:51,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:22:51,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 23:22:51,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:22:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:22:51,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:23:10,736 WARN L839 $PredicateComparison]: unable to prove that (forall ((aux_mod_~a~0_21 Int)) (or (let ((.cse0 (+ (* 4294967295 aux_mod_~a~0_21) 1))) (< (* 4294967296 (div .cse0 4294967296)) .cse0)) (< (mod c_thread1Thread1of1ForFork1_~i~0 4294967296) aux_mod_~a~0_21) (> 0 aux_mod_~a~0_21))) is different from false [2023-08-29 23:23:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:23:10,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175873743] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:23:10,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:23:10,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-08-29 23:23:10,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879959858] [2023-08-29 23:23:10,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:23:10,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:23:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:23:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:23:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=131, Unknown=9, NotChecked=24, Total=210 [2023-08-29 23:23:10,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 232 [2023-08-29 23:23:10,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1278 transitions, 36758 flow. Second operand has 15 states, 15 states have (on average 93.2) internal successors, (1398), 15 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:10,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:23:10,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 232 [2023-08-29 23:23:10,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:23:23,663 INFO L130 PetriNetUnfolder]: 17137/27491 cut-off events. [2023-08-29 23:23:23,663 INFO L131 PetriNetUnfolder]: For 1925195/1925195 co-relation queries the response was YES. [2023-08-29 23:23:24,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384779 conditions, 27491 events. 17137/27491 cut-off events. For 1925195/1925195 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 212507 event pairs, 5466 based on Foata normal form. 20/27511 useless extension candidates. Maximal degree in co-relation 384612. Up to 19175 conditions per place. [2023-08-29 23:23:25,165 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 1114 selfloop transitions, 268 changer transitions 0/1382 dead transitions. [2023-08-29 23:23:25,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1382 transitions, 41422 flow [2023-08-29 23:23:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:23:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:23:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1212 transitions. [2023-08-29 23:23:25,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353448275862069 [2023-08-29 23:23:25,167 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1212 transitions. [2023-08-29 23:23:25,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1212 transitions. [2023-08-29 23:23:25,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:23:25,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1212 transitions. [2023-08-29 23:23:25,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:25,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 232.0) internal successors, (3016), 13 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:25,172 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 232.0) internal successors, (3016), 13 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:25,172 INFO L175 Difference]: Start difference. First operand has 392 places, 1278 transitions, 36758 flow. Second operand 12 states and 1212 transitions. [2023-08-29 23:23:25,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1382 transitions, 41422 flow [2023-08-29 23:23:35,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1382 transitions, 39505 flow, removed 202 selfloop flow, removed 6 redundant places. [2023-08-29 23:23:35,525 INFO L231 Difference]: Finished difference. Result has 404 places, 1291 transitions, 35800 flow [2023-08-29 23:23:35,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=34852, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1018, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=35800, PETRI_PLACES=404, PETRI_TRANSITIONS=1291} [2023-08-29 23:23:35,526 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2023-08-29 23:23:35,527 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 1291 transitions, 35800 flow [2023-08-29 23:23:35,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 93.2) internal successors, (1398), 15 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:35,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:23:35,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:23:35,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-29 23:23:35,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:23:35,728 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:23:35,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:23:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash -815195103, now seen corresponding path program 10 times [2023-08-29 23:23:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:23:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4825038] [2023-08-29 23:23:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:23:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:23:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:23:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:23:35,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:23:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4825038] [2023-08-29 23:23:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4825038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:23:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28253833] [2023-08-29 23:23:35,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 23:23:35,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:23:35,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:23:35,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:23:35,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-29 23:23:35,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 23:23:35,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:23:35,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:23:35,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:23:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:23:36,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:23:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:23:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28253833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:23:42,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:23:42,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2023-08-29 23:23:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911002408] [2023-08-29 23:23:42,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:23:42,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 23:23:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:23:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 23:23:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=92, Unknown=3, NotChecked=0, Total=132 [2023-08-29 23:23:42,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 232 [2023-08-29 23:23:42,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 1291 transitions, 35800 flow. Second operand has 12 states, 12 states have (on average 96.58333333333333) internal successors, (1159), 12 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:42,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:23:42,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 232 [2023-08-29 23:23:42,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:23:44,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:23:47,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:23:49,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:23:51,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:23:53,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:23:56,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:23:58,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:11,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 13.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:13,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:15,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:19,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:22,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:24,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:27,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:29,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:31,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:33,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:35,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:38,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:40,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:42,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:44,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:46,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:48,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:50,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:55,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:24:57,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:00,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:04,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:06,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:08,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:10,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:12,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:14,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:17,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:19,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:21,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:23,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:25,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:28,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:31,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:33,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:35,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:37,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:39,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:41,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:43,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:46,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:49,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:51,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:53,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:25:59,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:26:01,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:26:03,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:26:05,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:26:08,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:26:10,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-29 23:26:12,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] Killed by 15