/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:25:20,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:25:20,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:25:20,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:25:20,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:25:20,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:25:20,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:25:20,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:25:20,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:25:20,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:25:20,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:25:20,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:25:20,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:25:21,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:25:21,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:25:21,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:25:21,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:25:21,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:25:21,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:25:21,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:25:21,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:25:21,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:25:21,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:25:21,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:25:21,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:25:21,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:25:21,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:25:21,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:25:21,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:25:21,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:25:21,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:25:21,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:25:21,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:25:21,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:25:21,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:25:21,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:25:21,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:25:21,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:25:21,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:25:21,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:25:21,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:25:21,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 05:25:21,067 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:25:21,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:25:21,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:25:21,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:25:21,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:25:21,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:25:21,070 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:25:21,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:25:21,070 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:25:21,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:25:21,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:25:21,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:25:21,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:25:21,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:25:21,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:25:21,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:25:21,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:25:21,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:25:21,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:25:21,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:25:21,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:25:21,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:25:21,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:25:21,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:25:21,073 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:25:21,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:25:21,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:25:21,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:25:21,337 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:25:21,338 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:25:21,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-01-28 05:25:22,417 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:25:22,587 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:25:22,588 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-01-28 05:25:22,593 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e958302/c0c8c15f3f774edb9d8a796a2938d6fb/FLAG3e0a1d680 [2023-01-28 05:25:22,604 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e958302/c0c8c15f3f774edb9d8a796a2938d6fb [2023-01-28 05:25:22,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:25:22,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:25:22,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:25:22,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:25:22,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:25:22,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab7ebf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22, skipping insertion in model container [2023-01-28 05:25:22,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:25:22,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:25:22,756 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/popl20-threaded-sum-3.wvr.c[2957,2970] [2023-01-28 05:25:22,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:25:22,766 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:25:22,785 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/popl20-threaded-sum-3.wvr.c[2957,2970] [2023-01-28 05:25:22,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:25:22,792 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:25:22,792 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:25:22,798 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:25:22,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22 WrapperNode [2023-01-28 05:25:22,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:25:22,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:25:22,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:25:22,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:25:22,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,832 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-01-28 05:25:22,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:25:22,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:25:22,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:25:22,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:25:22,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:25:22,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:25:22,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:25:22,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:25:22,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (1/1) ... [2023-01-28 05:25:22,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:25:22,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:25:22,910 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) [2023-01-28 05:25:22,937 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 [2023-01-28 05:25:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:25:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:25:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:25:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:25:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:25:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:25:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:25:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:25:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:25:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:25:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:25:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:25:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:25:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:25:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:25:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:25:22,957 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:25:23,068 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:25:23,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:25:23,313 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:25:23,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:25:23,374 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 05:25:23,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:25:23 BoogieIcfgContainer [2023-01-28 05:25:23,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:25:23,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:25:23,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:25:23,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:25:23,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:25:22" (1/3) ... [2023-01-28 05:25:23,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f828f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:25:23, skipping insertion in model container [2023-01-28 05:25:23,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:25:22" (2/3) ... [2023-01-28 05:25:23,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f828f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:25:23, skipping insertion in model container [2023-01-28 05:25:23,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:25:23" (3/3) ... [2023-01-28 05:25:23,386 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2023-01-28 05:25:23,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:25:23,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:25:23,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:25:23,454 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 05:25:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 111 transitions, 246 flow [2023-01-28 05:25:23,529 INFO L130 PetriNetUnfolder]: 8/108 cut-off events. [2023-01-28 05:25:23,530 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:25:23,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 8/108 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-01-28 05:25:23,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 111 transitions, 246 flow [2023-01-28 05:25:23,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 98 transitions, 214 flow [2023-01-28 05:25:23,541 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:25:23,550 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 98 transitions, 214 flow [2023-01-28 05:25:23,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 98 transitions, 214 flow [2023-01-28 05:25:23,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 98 transitions, 214 flow [2023-01-28 05:25:23,579 INFO L130 PetriNetUnfolder]: 8/98 cut-off events. [2023-01-28 05:25:23,580 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:25:23,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 98 events. 8/98 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-01-28 05:25:23,582 INFO L119 LiptonReduction]: Number of co-enabled transitions 1010 [2023-01-28 05:25:26,327 INFO L134 LiptonReduction]: Checked pairs total: 1725 [2023-01-28 05:25:26,327 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-01-28 05:25:26,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:25:26,346 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=LoopsAndPotentialCycles, 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;@3efea62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:25:26,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 05:25:26,353 INFO L130 PetriNetUnfolder]: 3/24 cut-off events. [2023-01-28 05:25:26,353 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:25:26,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:26,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:26,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:26,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -807744710, now seen corresponding path program 1 times [2023-01-28 05:25:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:26,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814402301] [2023-01-28 05:25:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:26,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814402301] [2023-01-28 05:25:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814402301] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:25:27,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:25:27,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:25:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396700350] [2023-01-28 05:25:27,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:25:27,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:25:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:27,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:25:27,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:25:27,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 195 [2023-01-28 05:25:27,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:27,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:27,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 195 [2023-01-28 05:25:27,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:27,518 INFO L130 PetriNetUnfolder]: 767/1086 cut-off events. [2023-01-28 05:25:27,519 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-01-28 05:25:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 1086 events. 767/1086 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3950 event pairs, 109 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 2171. Up to 681 conditions per place. [2023-01-28 05:25:27,530 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 50 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-01-28 05:25:27,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 58 transitions, 260 flow [2023-01-28 05:25:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:25:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:25:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2023-01-28 05:25:27,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48615384615384616 [2023-01-28 05:25:27,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2023-01-28 05:25:27,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2023-01-28 05:25:27,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:27,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2023-01-28 05:25:27,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:27,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:27,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:27,568 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 68 flow. Second operand 5 states and 474 transitions. [2023-01-28 05:25:27,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 58 transitions, 260 flow [2023-01-28 05:25:27,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 05:25:27,575 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 108 flow [2023-01-28 05:25:27,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-01-28 05:25:27,581 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-01-28 05:25:27,581 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 108 flow [2023-01-28 05:25:27,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:27,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:27,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:27,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:25:27,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:27,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1820244098, now seen corresponding path program 1 times [2023-01-28 05:25:27,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:27,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446132061] [2023-01-28 05:25:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:27,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446132061] [2023-01-28 05:25:27,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446132061] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:25:27,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:25:27,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:25:27,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719201219] [2023-01-28 05:25:27,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:25:27,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:25:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:25:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:25:27,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 195 [2023-01-28 05:25:27,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:27,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:27,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 195 [2023-01-28 05:25:27,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:28,105 INFO L130 PetriNetUnfolder]: 997/1420 cut-off events. [2023-01-28 05:25:28,105 INFO L131 PetriNetUnfolder]: For 684/684 co-relation queries the response was YES. [2023-01-28 05:25:28,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 1420 events. 997/1420 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5321 event pairs, 149 based on Foata normal form. 48/1468 useless extension candidates. Maximal degree in co-relation 1963. Up to 672 conditions per place. [2023-01-28 05:25:28,114 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 59 selfloop transitions, 10 changer transitions 2/71 dead transitions. [2023-01-28 05:25:28,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 373 flow [2023-01-28 05:25:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:25:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:25:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-01-28 05:25:28,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2023-01-28 05:25:28,116 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-01-28 05:25:28,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-01-28 05:25:28,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:28,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-01-28 05:25:28,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,120 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,120 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 108 flow. Second operand 6 states and 564 transitions. [2023-01-28 05:25:28,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 373 flow [2023-01-28 05:25:28,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:25:28,124 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 189 flow [2023-01-28 05:25:28,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-01-28 05:25:28,125 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-01-28 05:25:28,125 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 189 flow [2023-01-28 05:25:28,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:28,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:28,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:25:28,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:28,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1826456622, now seen corresponding path program 2 times [2023-01-28 05:25:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:28,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752677822] [2023-01-28 05:25:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:28,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:28,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752677822] [2023-01-28 05:25:28,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752677822] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:25:28,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:25:28,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:25:28,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240027565] [2023-01-28 05:25:28,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:25:28,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:25:28,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:28,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:25:28,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:25:28,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 195 [2023-01-28 05:25:28,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:28,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 195 [2023-01-28 05:25:28,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:28,780 INFO L130 PetriNetUnfolder]: 1327/1918 cut-off events. [2023-01-28 05:25:28,780 INFO L131 PetriNetUnfolder]: For 3235/3235 co-relation queries the response was YES. [2023-01-28 05:25:28,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6078 conditions, 1918 events. 1327/1918 cut-off events. For 3235/3235 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7964 event pairs, 281 based on Foata normal form. 16/1934 useless extension candidates. Maximal degree in co-relation 3318. Up to 1027 conditions per place. [2023-01-28 05:25:28,792 INFO L137 encePairwiseOnDemand]: 188/195 looper letters, 80 selfloop transitions, 22 changer transitions 10/112 dead transitions. [2023-01-28 05:25:28,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 112 transitions, 819 flow [2023-01-28 05:25:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:25:28,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:25:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 559 transitions. [2023-01-28 05:25:28,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-01-28 05:25:28,794 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 559 transitions. [2023-01-28 05:25:28,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 559 transitions. [2023-01-28 05:25:28,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:28,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 559 transitions. [2023-01-28 05:25:28,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,798 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,798 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 189 flow. Second operand 6 states and 559 transitions. [2023-01-28 05:25:28,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 112 transitions, 819 flow [2023-01-28 05:25:28,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 112 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:25:28,809 INFO L231 Difference]: Finished difference. Result has 47 places, 56 transitions, 397 flow [2023-01-28 05:25:28,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=47, PETRI_TRANSITIONS=56} [2023-01-28 05:25:28,810 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-01-28 05:25:28,813 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 56 transitions, 397 flow [2023-01-28 05:25:28,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:28,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:28,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:28,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:25:28,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:28,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:28,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1205848806, now seen corresponding path program 3 times [2023-01-28 05:25:28,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:28,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395143702] [2023-01-28 05:25:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:28,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395143702] [2023-01-28 05:25:29,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395143702] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:25:29,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581742813] [2023-01-28 05:25:29,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:25:29,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:29,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:25:29,093 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) [2023-01-28 05:25:29,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:25:29,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 05:25:29,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:25:29,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 05:25:29,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:25:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:25:29,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:25:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581742813] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:25:29,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:25:29,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-01-28 05:25:29,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254476511] [2023-01-28 05:25:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:25:29,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:25:29,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:29,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:25:29,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 05:25:29,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 195 [2023-01-28 05:25:29,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 56 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:29,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:29,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 195 [2023-01-28 05:25:29,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:29,687 INFO L130 PetriNetUnfolder]: 1893/2749 cut-off events. [2023-01-28 05:25:29,687 INFO L131 PetriNetUnfolder]: For 7782/8005 co-relation queries the response was YES. [2023-01-28 05:25:29,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 2749 events. 1893/2749 cut-off events. For 7782/8005 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 13309 event pairs, 177 based on Foata normal form. 257/2968 useless extension candidates. Maximal degree in co-relation 6508. Up to 1507 conditions per place. [2023-01-28 05:25:29,713 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 122 selfloop transitions, 16 changer transitions 0/141 dead transitions. [2023-01-28 05:25:29,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 141 transitions, 1320 flow [2023-01-28 05:25:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:25:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:25:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2023-01-28 05:25:29,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158974358974359 [2023-01-28 05:25:29,716 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2023-01-28 05:25:29,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2023-01-28 05:25:29,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:29,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2023-01-28 05:25:29,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:29,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:29,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:29,720 INFO L175 Difference]: Start difference. First operand has 47 places, 56 transitions, 397 flow. Second operand 5 states and 503 transitions. [2023-01-28 05:25:29,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 141 transitions, 1320 flow [2023-01-28 05:25:29,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 141 transitions, 1320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 05:25:29,734 INFO L231 Difference]: Finished difference. Result has 53 places, 69 transitions, 579 flow [2023-01-28 05:25:29,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=53, PETRI_TRANSITIONS=69} [2023-01-28 05:25:29,736 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 05:25:29,736 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 69 transitions, 579 flow [2023-01-28 05:25:29,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:29,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:29,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:29,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:25:29,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:29,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:29,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:29,943 INFO L85 PathProgramCache]: Analyzing trace with hash 582364476, now seen corresponding path program 1 times [2023-01-28 05:25:29,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:29,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297909041] [2023-01-28 05:25:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:29,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:31,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297909041] [2023-01-28 05:25:31,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297909041] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:25:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172090884] [2023-01-28 05:25:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:31,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:25:31,346 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) [2023-01-28 05:25:31,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:25:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:31,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 05:25:31,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:25:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:32,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:25:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172090884] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:25:35,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:25:35,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-01-28 05:25:35,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132793145] [2023-01-28 05:25:35,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:25:35,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 05:25:35,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 05:25:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-01-28 05:25:35,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 195 [2023-01-28 05:25:35,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 69 transitions, 579 flow. Second operand has 22 states, 22 states have (on average 74.86363636363636) internal successors, (1647), 22 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:35,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:35,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 195 [2023-01-28 05:25:35,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:48,400 INFO L130 PetriNetUnfolder]: 9961/14297 cut-off events. [2023-01-28 05:25:48,400 INFO L131 PetriNetUnfolder]: For 48654/48654 co-relation queries the response was YES. [2023-01-28 05:25:48,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62631 conditions, 14297 events. 9961/14297 cut-off events. For 48654/48654 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 80101 event pairs, 358 based on Foata normal form. 17/14314 useless extension candidates. Maximal degree in co-relation 29726. Up to 3559 conditions per place. [2023-01-28 05:25:48,500 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 357 selfloop transitions, 428 changer transitions 218/1003 dead transitions. [2023-01-28 05:25:48,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 1003 transitions, 9772 flow [2023-01-28 05:25:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-01-28 05:25:48,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-01-28 05:25:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4542 transitions. [2023-01-28 05:25:48,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234965034965035 [2023-01-28 05:25:48,513 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 4542 transitions. [2023-01-28 05:25:48,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 4542 transitions. [2023-01-28 05:25:48,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:48,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 4542 transitions. [2023-01-28 05:25:48,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 82.58181818181818) internal successors, (4542), 55 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:48,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:48,544 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 195.0) internal successors, (10920), 56 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:48,544 INFO L175 Difference]: Start difference. First operand has 53 places, 69 transitions, 579 flow. Second operand 55 states and 4542 transitions. [2023-01-28 05:25:48,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 1003 transitions, 9772 flow [2023-01-28 05:25:48,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 1003 transitions, 9730 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:25:48,690 INFO L231 Difference]: Finished difference. Result has 120 places, 516 transitions, 6333 flow [2023-01-28 05:25:48,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=6333, PETRI_PLACES=120, PETRI_TRANSITIONS=516} [2023-01-28 05:25:48,693 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2023-01-28 05:25:48,695 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 516 transitions, 6333 flow [2023-01-28 05:25:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 74.86363636363636) internal successors, (1647), 22 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:48,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:48,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:48,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:25:48,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:48,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:48,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash -508209307, now seen corresponding path program 1 times [2023-01-28 05:25:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:48,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306393372] [2023-01-28 05:25:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:48,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:49,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306393372] [2023-01-28 05:25:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306393372] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:25:49,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063405981] [2023-01-28 05:25:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:49,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:49,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:25:49,427 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) [2023-01-28 05:25:49,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:25:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:49,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 05:25:49,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:25:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:25:49,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:25:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:49,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063405981] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:25:49,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:25:49,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 14 [2023-01-28 05:25:49,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192761131] [2023-01-28 05:25:49,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:25:49,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:25:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:25:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:25:49,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 195 [2023-01-28 05:25:49,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 516 transitions, 6333 flow. Second operand has 14 states, 14 states have (on average 80.64285714285714) internal successors, (1129), 14 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:49,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:49,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 195 [2023-01-28 05:25:49,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:51,778 INFO L130 PetriNetUnfolder]: 9010/12765 cut-off events. [2023-01-28 05:25:51,778 INFO L131 PetriNetUnfolder]: For 63887/63887 co-relation queries the response was YES. [2023-01-28 05:25:51,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61827 conditions, 12765 events. 9010/12765 cut-off events. For 63887/63887 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 69410 event pairs, 105 based on Foata normal form. 914/13679 useless extension candidates. Maximal degree in co-relation 61701. Up to 4649 conditions per place. [2023-01-28 05:25:51,869 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 683 selfloop transitions, 304 changer transitions 0/987 dead transitions. [2023-01-28 05:25:51,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 987 transitions, 13183 flow [2023-01-28 05:25:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 05:25:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 05:25:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1131 transitions. [2023-01-28 05:25:51,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2023-01-28 05:25:51,872 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1131 transitions. [2023-01-28 05:25:51,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1131 transitions. [2023-01-28 05:25:51,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:51,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1131 transitions. [2023-01-28 05:25:51,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:51,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:51,879 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 195.0) internal successors, (2730), 14 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:51,879 INFO L175 Difference]: Start difference. First operand has 120 places, 516 transitions, 6333 flow. Second operand 13 states and 1131 transitions. [2023-01-28 05:25:51,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 987 transitions, 13183 flow [2023-01-28 05:25:52,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 987 transitions, 11004 flow, removed 1085 selfloop flow, removed 11 redundant places. [2023-01-28 05:25:52,157 INFO L231 Difference]: Finished difference. Result has 115 places, 543 transitions, 6488 flow [2023-01-28 05:25:52,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6488, PETRI_PLACES=115, PETRI_TRANSITIONS=543} [2023-01-28 05:25:52,159 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2023-01-28 05:25:52,160 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 543 transitions, 6488 flow [2023-01-28 05:25:52,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 80.64285714285714) internal successors, (1129), 14 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:52,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:52,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:52,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 05:25:52,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:52,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:52,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:52,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1579273131, now seen corresponding path program 2 times [2023-01-28 05:25:52,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766954032] [2023-01-28 05:25:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:52,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:52,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:52,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766954032] [2023-01-28 05:25:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766954032] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:25:52,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866549255] [2023-01-28 05:25:52,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:25:52,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:52,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:25:52,609 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) [2023-01-28 05:25:52,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:25:52,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:25:52,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:25:52,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 05:25:52,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:25:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:52,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:25:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866549255] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:25:52,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:25:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2023-01-28 05:25:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222553623] [2023-01-28 05:25:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:25:52,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:25:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:25:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:25:52,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 195 [2023-01-28 05:25:52,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 543 transitions, 6488 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:52,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:52,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 195 [2023-01-28 05:25:52,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:25:54,794 INFO L130 PetriNetUnfolder]: 11204/16037 cut-off events. [2023-01-28 05:25:54,795 INFO L131 PetriNetUnfolder]: For 80035/80035 co-relation queries the response was YES. [2023-01-28 05:25:54,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85237 conditions, 16037 events. 11204/16037 cut-off events. For 80035/80035 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 92771 event pairs, 793 based on Foata normal form. 382/16419 useless extension candidates. Maximal degree in co-relation 76365. Up to 5546 conditions per place. [2023-01-28 05:25:54,915 INFO L137 encePairwiseOnDemand]: 187/195 looper letters, 820 selfloop transitions, 321 changer transitions 0/1141 dead transitions. [2023-01-28 05:25:54,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 1141 transitions, 14891 flow [2023-01-28 05:25:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:25:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:25:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 583 transitions. [2023-01-28 05:25:54,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982905982905983 [2023-01-28 05:25:54,918 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 583 transitions. [2023-01-28 05:25:54,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 583 transitions. [2023-01-28 05:25:54,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:25:54,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 583 transitions. [2023-01-28 05:25:54,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.16666666666667) internal successors, (583), 6 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:54,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:54,922 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:54,922 INFO L175 Difference]: Start difference. First operand has 115 places, 543 transitions, 6488 flow. Second operand 6 states and 583 transitions. [2023-01-28 05:25:54,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 1141 transitions, 14891 flow [2023-01-28 05:25:55,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 1141 transitions, 14549 flow, removed 169 selfloop flow, removed 2 redundant places. [2023-01-28 05:25:55,483 INFO L231 Difference]: Finished difference. Result has 122 places, 749 transitions, 10016 flow [2023-01-28 05:25:55,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=6303, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10016, PETRI_PLACES=122, PETRI_TRANSITIONS=749} [2023-01-28 05:25:55,484 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2023-01-28 05:25:55,484 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 749 transitions, 10016 flow [2023-01-28 05:25:55,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:55,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:55,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:55,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 05:25:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:55,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:55,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1321199193, now seen corresponding path program 3 times [2023-01-28 05:25:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:55,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805934110] [2023-01-28 05:25:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:56,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805934110] [2023-01-28 05:25:56,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805934110] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:25:56,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53402479] [2023-01-28 05:25:56,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:25:56,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:56,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:25:56,133 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) [2023-01-28 05:25:56,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:25:56,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 05:25:56,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:25:56,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 05:25:56,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:25:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:56,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:25:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:56,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53402479] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:25:56,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:25:56,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 05:25:56,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698041541] [2023-01-28 05:25:56,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:25:56,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 05:25:56,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:56,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 05:25:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-01-28 05:25:56,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 195 [2023-01-28 05:25:56,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 749 transitions, 10016 flow. Second operand has 11 states, 11 states have (on average 85.63636363636364) internal successors, (942), 11 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:56,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:56,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 195 [2023-01-28 05:25:56,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:26:03,191 INFO L130 PetriNetUnfolder]: 30041/43061 cut-off events. [2023-01-28 05:26:03,191 INFO L131 PetriNetUnfolder]: For 308392/308413 co-relation queries the response was YES. [2023-01-28 05:26:03,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259551 conditions, 43061 events. 30041/43061 cut-off events. For 308392/308413 co-relation queries the response was YES. Maximal size of possible extension queue 2100. Compared 282442 event pairs, 1506 based on Foata normal form. 2002/45051 useless extension candidates. Maximal degree in co-relation 219571. Up to 9707 conditions per place. [2023-01-28 05:26:03,875 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 1854 selfloop transitions, 1817 changer transitions 4/3678 dead transitions. [2023-01-28 05:26:03,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 3678 transitions, 54751 flow [2023-01-28 05:26:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 05:26:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 05:26:03,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3208 transitions. [2023-01-28 05:26:03,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47003663003663004 [2023-01-28 05:26:03,884 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3208 transitions. [2023-01-28 05:26:03,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3208 transitions. [2023-01-28 05:26:03,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:26:03,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3208 transitions. [2023-01-28 05:26:03,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 91.65714285714286) internal successors, (3208), 35 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:03,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 195.0) internal successors, (7020), 36 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:03,907 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 195.0) internal successors, (7020), 36 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:03,907 INFO L175 Difference]: Start difference. First operand has 122 places, 749 transitions, 10016 flow. Second operand 35 states and 3208 transitions. [2023-01-28 05:26:03,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 3678 transitions, 54751 flow [2023-01-28 05:26:06,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 3678 transitions, 54197 flow, removed 277 selfloop flow, removed 0 redundant places. [2023-01-28 05:26:06,489 INFO L231 Difference]: Finished difference. Result has 180 places, 2322 transitions, 38001 flow [2023-01-28 05:26:06,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=9934, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=38001, PETRI_PLACES=180, PETRI_TRANSITIONS=2322} [2023-01-28 05:26:06,491 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2023-01-28 05:26:06,491 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 2322 transitions, 38001 flow [2023-01-28 05:26:06,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 85.63636363636364) internal successors, (942), 11 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:06,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:26:06,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:26:06,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 05:26:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:26:06,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:26:06,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:26:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash 587723179, now seen corresponding path program 4 times [2023-01-28 05:26:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:26:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461699312] [2023-01-28 05:26:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:26:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:26:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:26:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:26:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:26:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461699312] [2023-01-28 05:26:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461699312] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:26:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619740372] [2023-01-28 05:26:07,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:26:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:26:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:26:07,156 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) [2023-01-28 05:26:07,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 05:26:07,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:26:07,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:26:07,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 05:26:07,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:26:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:26:07,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:26:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:26:08,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619740372] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:26:08,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:26:08,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 9] total 19 [2023-01-28 05:26:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421511008] [2023-01-28 05:26:08,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:26:08,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:26:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:26:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:26:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-01-28 05:26:08,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 195 [2023-01-28 05:26:08,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 2322 transitions, 38001 flow. Second operand has 20 states, 20 states have (on average 73.85) internal successors, (1477), 20 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:08,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:26:08,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 195 [2023-01-28 05:26:08,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:26:44,404 INFO L130 PetriNetUnfolder]: 58565/85538 cut-off events. [2023-01-28 05:26:44,405 INFO L131 PetriNetUnfolder]: For 1634340/1634340 co-relation queries the response was YES. [2023-01-28 05:26:45,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649136 conditions, 85538 events. 58565/85538 cut-off events. For 1634340/1634340 co-relation queries the response was YES. Maximal size of possible extension queue 4373. Compared 637032 event pairs, 307 based on Foata normal form. 1440/86978 useless extension candidates. Maximal degree in co-relation 578261. Up to 18905 conditions per place. [2023-01-28 05:26:45,493 INFO L137 encePairwiseOnDemand]: 181/195 looper letters, 2940 selfloop transitions, 5332 changer transitions 51/8323 dead transitions. [2023-01-28 05:26:45,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 8323 transitions, 149772 flow [2023-01-28 05:26:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-01-28 05:26:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-01-28 05:26:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 9390 transitions. [2023-01-28 05:26:45,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-01-28 05:26:45,511 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 9390 transitions. [2023-01-28 05:26:45,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 9390 transitions. [2023-01-28 05:26:45,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:26:45,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 9390 transitions. [2023-01-28 05:26:45,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 78.25) internal successors, (9390), 120 states have internal predecessors, (9390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:45,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 195.0) internal successors, (23595), 121 states have internal predecessors, (23595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:45,573 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 195.0) internal successors, (23595), 121 states have internal predecessors, (23595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:26:45,574 INFO L175 Difference]: Start difference. First operand has 180 places, 2322 transitions, 38001 flow. Second operand 120 states and 9390 transitions. [2023-01-28 05:26:45,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 8323 transitions, 149772 flow [2023-01-28 05:27:11,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 8323 transitions, 144313 flow, removed 2706 selfloop flow, removed 2 redundant places. [2023-01-28 05:27:11,653 INFO L231 Difference]: Finished difference. Result has 375 places, 7036 transitions, 131192 flow [2023-01-28 05:27:11,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=36431, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=131192, PETRI_PLACES=375, PETRI_TRANSITIONS=7036} [2023-01-28 05:27:11,656 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 343 predicate places. [2023-01-28 05:27:11,656 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 7036 transitions, 131192 flow [2023-01-28 05:27:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 73.85) internal successors, (1477), 20 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:27:11,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:27:11,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:27:11,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 05:27:11,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:27:11,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:27:11,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:27:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 243404620, now seen corresponding path program 2 times [2023-01-28 05:27:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:27:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620890921] [2023-01-28 05:27:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:27:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:27:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:27:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:27:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:27:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620890921] [2023-01-28 05:27:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620890921] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:27:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585018819] [2023-01-28 05:27:13,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:27:13,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:27:13,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:27:13,676 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) [2023-01-28 05:27:13,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 05:27:13,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:27:13,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:27:13,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 05:27:13,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:27:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:27:14,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:27:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:27:15,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585018819] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:27:15,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:27:15,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2023-01-28 05:27:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645949819] [2023-01-28 05:27:15,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:27:15,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 05:27:15,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:27:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 05:27:15,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2023-01-28 05:27:15,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 195 [2023-01-28 05:27:15,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 7036 transitions, 131192 flow. Second operand has 27 states, 27 states have (on average 72.55555555555556) internal successors, (1959), 27 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:27:15,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:27:15,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 195 [2023-01-28 05:27:15,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:30:38,099 INFO L130 PetriNetUnfolder]: 96931/142700 cut-off events. [2023-01-28 05:30:38,099 INFO L131 PetriNetUnfolder]: For 4896647/4896647 co-relation queries the response was YES. [2023-01-28 05:30:41,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332375 conditions, 142700 events. 96931/142700 cut-off events. For 4896647/4896647 co-relation queries the response was YES. Maximal size of possible extension queue 7203. Compared 1147816 event pairs, 511 based on Foata normal form. 224/142924 useless extension candidates. Maximal degree in co-relation 1330552. Up to 37194 conditions per place. [2023-01-28 05:30:41,940 INFO L137 encePairwiseOnDemand]: 182/195 looper letters, 4962 selfloop transitions, 9580 changer transitions 1420/15962 dead transitions. [2023-01-28 05:30:41,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 15962 transitions, 328894 flow [2023-01-28 05:30:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-01-28 05:30:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2023-01-28 05:30:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 11112 transitions. [2023-01-28 05:30:41,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40130010834236185 [2023-01-28 05:30:41,956 INFO L72 ComplementDD]: Start complementDD. Operand 142 states and 11112 transitions. [2023-01-28 05:30:41,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 11112 transitions. [2023-01-28 05:30:41,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:30:41,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 142 states and 11112 transitions. [2023-01-28 05:30:41,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 143 states, 142 states have (on average 78.25352112676056) internal successors, (11112), 142 states have internal predecessors, (11112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:30:42,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 143 states, 143 states have (on average 195.0) internal successors, (27885), 143 states have internal predecessors, (27885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:30:42,007 INFO L81 ComplementDD]: Finished complementDD. Result has 143 states, 143 states have (on average 195.0) internal successors, (27885), 143 states have internal predecessors, (27885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:30:42,007 INFO L175 Difference]: Start difference. First operand has 375 places, 7036 transitions, 131192 flow. Second operand 142 states and 11112 transitions. [2023-01-28 05:30:42,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 15962 transitions, 328894 flow [2023-01-28 05:38:03,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 15962 transitions, 313521 flow, removed 7650 selfloop flow, removed 6 redundant places. [2023-01-28 05:38:03,504 INFO L231 Difference]: Finished difference. Result has 593 places, 12545 transitions, 262274 flow [2023-01-28 05:38:03,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=124367, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=142, PETRI_FLOW=262274, PETRI_PLACES=593, PETRI_TRANSITIONS=12545} [2023-01-28 05:38:03,512 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 561 predicate places. [2023-01-28 05:38:03,512 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 12545 transitions, 262274 flow [2023-01-28 05:38:03,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 72.55555555555556) internal successors, (1959), 27 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:03,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:38:03,513 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:38:03,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 05:38:03,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:38:03,718 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:38:03,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:38:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1754784722, now seen corresponding path program 3 times [2023-01-28 05:38:03,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:38:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829631124] [2023-01-28 05:38:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:38:03,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:38:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:38:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:38:09,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:38:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829631124] [2023-01-28 05:38:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829631124] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:38:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792266423] [2023-01-28 05:38:09,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:38:09,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:38:09,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:38:09,213 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) [2023-01-28 05:38:09,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 05:38:09,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 05:38:09,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:38:09,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 05:38:09,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:38:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:38:11,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:38:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:38:18,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792266423] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:38:18,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:38:18,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2023-01-28 05:38:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500478425] [2023-01-28 05:38:18,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:38:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 05:38:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:38:18,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 05:38:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2023-01-28 05:38:18,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 195 [2023-01-28 05:38:18,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 12545 transitions, 262274 flow. Second operand has 28 states, 28 states have (on average 72.67857142857143) internal successors, (2035), 28 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:38:18,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:38:18,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 195 [2023-01-28 05:38:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 05:38:59,693 WARN L238 SmtUtils]: Removed 15 from assertion stack [2023-01-28 05:38:59,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 05:38:59,695 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 05:38:59,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 05:38:59,714 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:38:59,714 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:38:59,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 05:38:59,896 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 167 for 931ms.. [2023-01-28 05:38:59,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 05:38:59,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 05:38:59,898 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 05:38:59,898 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1] [2023-01-28 05:38:59,900 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 05:38:59,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 05:38:59,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 05:38:59 BasicIcfg [2023-01-28 05:38:59,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 05:38:59,903 INFO L158 Benchmark]: Toolchain (without parser) took 817296.54ms. Allocated memory was 392.2MB in the beginning and 8.7GB in the end (delta: 8.3GB). Free memory was 349.1MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 05:38:59,903 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:38:59,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.48ms. Allocated memory is still 392.2MB. Free memory was 348.8MB in the beginning and 337.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 05:38:59,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.31ms. Allocated memory is still 392.2MB. Free memory was 337.1MB in the beginning and 335.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:38:59,904 INFO L158 Benchmark]: Boogie Preprocessor took 29.80ms. Allocated memory is still 392.2MB. Free memory was 335.4MB in the beginning and 334.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:38:59,904 INFO L158 Benchmark]: RCFGBuilder took 512.44ms. Allocated memory is still 392.2MB. Free memory was 334.1MB in the beginning and 315.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 05:38:59,904 INFO L158 Benchmark]: TraceAbstraction took 816520.60ms. Allocated memory was 392.2MB in the beginning and 8.7GB in the end (delta: 8.3GB). Free memory was 314.4MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 05:38:59,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 191.48ms. Allocated memory is still 392.2MB. Free memory was 348.8MB in the beginning and 337.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.31ms. Allocated memory is still 392.2MB. Free memory was 337.1MB in the beginning and 335.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.80ms. Allocated memory is still 392.2MB. Free memory was 335.4MB in the beginning and 334.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 512.44ms. Allocated memory is still 392.2MB. Free memory was 334.1MB in the beginning and 315.4MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 816520.60ms. Allocated memory was 392.2MB in the beginning and 8.7GB in the end (delta: 8.3GB). Free memory was 314.4MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 100 PlacesBefore, 32 PlacesAfterwards, 98 TransitionsBefore, 25 TransitionsAfterwards, 1010 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 84 TotalNumberOfCompositions, 1725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1440, independent: 1399, independent conditional: 0, independent unconditional: 1399, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 531, independent: 522, independent conditional: 0, independent unconditional: 522, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1440, independent: 877, independent conditional: 0, independent unconditional: 877, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 531, unknown conditional: 0, unknown unconditional: 531] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 167 for 931ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 167 for 931ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 167 for 931ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 167 for 931ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 129 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 816.4s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 782.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2495 SdHoareTripleChecker+Valid, 20.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2495 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 19.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 372 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10433 IncrementalHoareTripleChecker+Invalid, 10805 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 372 mSolverCounterUnsat, 21 mSDtfsCounter, 10433 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 775 GetRequests, 297 SyntacticMatches, 4 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17335 ImplicationChecksByTransitivity, 99.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262274occurred in iteration=10, InterpolantAutomatonStates: 393, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 27.5s InterpolantComputationTime, 429 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 566 ConstructedInterpolants, 0 QuantifiedInterpolants, 19361 SizeOfPredicates, 73 NumberOfNonLiveVariables, 1409 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 12/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown