/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-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 05:00:15,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 05:00:15,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 05:00:15,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 05:00:15,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 05:00:15,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 05:00:15,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 05:00:15,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 05:00:15,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 05:00:15,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 05:00:15,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 05:00:15,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 05:00:15,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 05:00:15,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 05:00:15,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 05:00:15,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 05:00:15,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 05:00:15,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 05:00:15,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 05:00:15,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 05:00:15,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 05:00:15,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 05:00:15,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 05:00:15,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 05:00:15,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 05:00:15,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 05:00:15,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 05:00:15,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 05:00:15,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 05:00:15,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 05:00:15,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 05:00:15,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 05:00:15,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 05:00:15,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 05:00:15,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 05:00:15,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 05:00:16,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 05:00:16,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 05:00:16,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 05:00:16,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 05:00:16,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 05:00:16,002 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-NoLbe-Before.epf [2022-01-19 05:00:16,034 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 05:00:16,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 05:00:16,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 05:00:16,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 05:00:16,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 05:00:16,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 05:00:16,036 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 05:00:16,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 05:00:16,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 05:00:16,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 05:00:16,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 05:00:16,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 05:00:16,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 05:00:16,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 05:00:16,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 05:00:16,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 05:00:16,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:16,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 05:00:16,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 05:00:16,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 05:00:16,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 05:00:16,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 05:00:16,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 05:00:16,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 05:00:16,041 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 05:00:16,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 05:00:16,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 05:00:16,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 05:00:16,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 05:00:16,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 05:00:16,303 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 05:00:16,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2022-01-19 05:00:16,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aedce07c/e335ffc2ad5a476f8c62e765bf45c6a2/FLAG02a8d5371 [2022-01-19 05:00:16,815 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 05:00:16,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2022-01-19 05:00:16,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aedce07c/e335ffc2ad5a476f8c62e765bf45c6a2/FLAG02a8d5371 [2022-01-19 05:00:16,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aedce07c/e335ffc2ad5a476f8c62e765bf45c6a2 [2022-01-19 05:00:16,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 05:00:16,847 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 05:00:16,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:16,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 05:00:16,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 05:00:16,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:16" (1/1) ... [2022-01-19 05:00:16,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66df7f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:16, skipping insertion in model container [2022-01-19 05:00:16,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 05:00:16" (1/1) ... [2022-01-19 05:00:16,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 05:00:16,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 05:00:17,085 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i[945,958] [2022-01-19 05:00:17,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:17,249 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 05:00:17,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i[945,958] [2022-01-19 05:00:17,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 05:00:17,340 INFO L208 MainTranslator]: Completed translation [2022-01-19 05:00:17,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17 WrapperNode [2022-01-19 05:00:17,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 05:00:17,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:17,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 05:00:17,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 05:00:17,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,398 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 05:00:17,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 05:00:17,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 05:00:17,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 05:00:17,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 05:00:17,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 05:00:17,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 05:00:17,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 05:00:17,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 05:00:17,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (1/1) ... [2022-01-19 05:00:17,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 05:00:17,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 05:00:17,475 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) [2022-01-19 05:00:17,488 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 [2022-01-19 05:00:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 05:00:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 05:00:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 05:00:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 05:00:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 05:00:17,513 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 05:00:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 05:00:17,514 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 05:00:17,514 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 05:00:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 05:00:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 05:00:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 05:00:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 05:00:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 05:00:17,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 05:00:17,517 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 05:00:17,676 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 05:00:17,678 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 05:00:17,868 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 05:00:17,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 05:00:17,876 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 05:00:17,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:17 BoogieIcfgContainer [2022-01-19 05:00:17,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 05:00:17,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 05:00:17,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 05:00:17,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 05:00:17,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 05:00:16" (1/3) ... [2022-01-19 05:00:17,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e9cded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:17, skipping insertion in model container [2022-01-19 05:00:17,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 05:00:17" (2/3) ... [2022-01-19 05:00:17,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e9cded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 05:00:17, skipping insertion in model container [2022-01-19 05:00:17,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 05:00:17" (3/3) ... [2022-01-19 05:00:17,891 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2022-01-19 05:00:17,895 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 05:00:17,896 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 05:00:17,896 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 05:00:17,934 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,935 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,935 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,935 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,935 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,935 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,936 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,936 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,936 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,936 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,937 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,937 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,937 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,937 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,937 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,937 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,938 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,938 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,938 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,938 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,938 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,939 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,939 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,939 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,939 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,939 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,939 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,940 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,940 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,940 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,940 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,940 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,941 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,941 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,941 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,941 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,943 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,944 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,944 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,944 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,946 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,946 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,946 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,946 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,954 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,954 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,955 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,955 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 05:00:17,958 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 05:00:18,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 05:00:18,013 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 05:00:18,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 05:00:18,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 05:00:18,070 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-01-19 05:00:18,070 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:18,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 05:00:18,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 05:00:18,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-01-19 05:00:18,097 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-01-19 05:00:18,098 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 05:00:18,098 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:18,099 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:18,099 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2022-01-19 05:00:18,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:18,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752241864] [2022-01-19 05:00:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:18,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:18,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:18,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752241864] [2022-01-19 05:00:18,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752241864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:18,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:18,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:18,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722076343] [2022-01-19 05:00:18,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:18,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:18,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:18,611 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 05:00:18,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 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) [2022-01-19 05:00:18,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:18,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 05:00:18,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:19,000 INFO L129 PetriNetUnfolder]: 192/552 cut-off events. [2022-01-19 05:00:19,000 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-01-19 05:00:19,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 552 events. 192/552 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2675 event pairs, 24 based on Foata normal form. 27/555 useless extension candidates. Maximal degree in co-relation 888. Up to 64 conditions per place. [2022-01-19 05:00:19,010 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 5 changer transitions 44/131 dead transitions. [2022-01-19 05:00:19,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 430 flow [2022-01-19 05:00:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 05:00:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 05:00:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 991 transitions. [2022-01-19 05:00:19,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8285953177257525 [2022-01-19 05:00:19,045 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 991 transitions. [2022-01-19 05:00:19,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 991 transitions. [2022-01-19 05:00:19,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:19,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 991 transitions. [2022-01-19 05:00:19,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.23076923076923) internal successors, (991), 13 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,066 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,068 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 991 transitions. [2022-01-19 05:00:19,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 430 flow [2022-01-19 05:00:19,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 131 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 05:00:19,078 INFO L242 Difference]: Finished difference. Result has 105 places, 77 transitions, 226 flow [2022-01-19 05:00:19,079 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2022-01-19 05:00:19,084 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-01-19 05:00:19,084 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 226 flow [2022-01-19 05:00:19,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 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) [2022-01-19 05:00:19,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:19,085 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:19,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 05:00:19,086 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1090711155, now seen corresponding path program 1 times [2022-01-19 05:00:19,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:19,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963254463] [2022-01-19 05:00:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:19,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:19,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:19,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963254463] [2022-01-19 05:00:19,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963254463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:19,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:19,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:19,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286088538] [2022-01-19 05:00:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:19,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:19,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:19,223 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-01-19 05:00:19,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:19,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-01-19 05:00:19,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:19,351 INFO L129 PetriNetUnfolder]: 13/157 cut-off events. [2022-01-19 05:00:19,352 INFO L130 PetriNetUnfolder]: For 224/296 co-relation queries the response was YES. [2022-01-19 05:00:19,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 157 events. 13/157 cut-off events. For 224/296 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 476 event pairs, 7 based on Foata normal form. 10/160 useless extension candidates. Maximal degree in co-relation 310. Up to 26 conditions per place. [2022-01-19 05:00:19,354 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 10/87 dead transitions. [2022-01-19 05:00:19,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 87 transitions, 342 flow [2022-01-19 05:00:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 05:00:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 05:00:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-01-19 05:00:19,356 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-01-19 05:00:19,356 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-01-19 05:00:19,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-01-19 05:00:19,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:19,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-01-19 05:00:19,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,360 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,361 INFO L186 Difference]: Start difference. First operand has 105 places, 77 transitions, 226 flow. Second operand 9 states and 716 transitions. [2022-01-19 05:00:19,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 87 transitions, 342 flow [2022-01-19 05:00:19,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 87 transitions, 312 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-01-19 05:00:19,368 INFO L242 Difference]: Finished difference. Result has 107 places, 77 transitions, 235 flow [2022-01-19 05:00:19,369 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2022-01-19 05:00:19,369 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 23 predicate places. [2022-01-19 05:00:19,369 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 235 flow [2022-01-19 05:00:19,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:19,370 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:19,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 05:00:19,370 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1443416475, now seen corresponding path program 1 times [2022-01-19 05:00:19,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:19,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733303215] [2022-01-19 05:00:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:19,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:19,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:19,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733303215] [2022-01-19 05:00:19,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733303215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:19,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:19,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:19,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37583250] [2022-01-19 05:00:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:19,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:19,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:19,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-01-19 05:00:19,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:19,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-01-19 05:00:19,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:19,891 INFO L129 PetriNetUnfolder]: 120/486 cut-off events. [2022-01-19 05:00:19,891 INFO L130 PetriNetUnfolder]: For 756/1326 co-relation queries the response was YES. [2022-01-19 05:00:19,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 486 events. 120/486 cut-off events. For 756/1326 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2657 event pairs, 11 based on Foata normal form. 10/481 useless extension candidates. Maximal degree in co-relation 1183. Up to 62 conditions per place. [2022-01-19 05:00:19,896 INFO L132 encePairwiseOnDemand]: 78/92 looper letters, 34 selfloop transitions, 15 changer transitions 45/148 dead transitions. [2022-01-19 05:00:19,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 860 flow [2022-01-19 05:00:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 05:00:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 05:00:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1244 transitions. [2022-01-19 05:00:19,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7953964194373402 [2022-01-19 05:00:19,900 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1244 transitions. [2022-01-19 05:00:19,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1244 transitions. [2022-01-19 05:00:19,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:19,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1244 transitions. [2022-01-19 05:00:19,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.17647058823529) internal successors, (1244), 17 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,907 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,908 INFO L186 Difference]: Start difference. First operand has 107 places, 77 transitions, 235 flow. Second operand 17 states and 1244 transitions. [2022-01-19 05:00:19,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 860 flow [2022-01-19 05:00:19,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 148 transitions, 742 flow, removed 52 selfloop flow, removed 11 redundant places. [2022-01-19 05:00:19,917 INFO L242 Difference]: Finished difference. Result has 122 places, 85 transitions, 352 flow [2022-01-19 05:00:19,917 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=352, PETRI_PLACES=122, PETRI_TRANSITIONS=85} [2022-01-19 05:00:19,919 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2022-01-19 05:00:19,919 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 85 transitions, 352 flow [2022-01-19 05:00:19,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:19,919 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:19,919 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:19,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 05:00:19,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:19,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1615688216, now seen corresponding path program 1 times [2022-01-19 05:00:19,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:19,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884348767] [2022-01-19 05:00:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:19,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:20,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:20,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:20,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884348767] [2022-01-19 05:00:20,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884348767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:20,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:20,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 05:00:20,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477797734] [2022-01-19 05:00:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:20,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 05:00:20,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:20,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 05:00:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 05:00:20,086 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-01-19 05:00:20,086 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 85 transitions, 352 flow. Second operand has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,086 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:20,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-01-19 05:00:20,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:20,256 INFO L129 PetriNetUnfolder]: 69/364 cut-off events. [2022-01-19 05:00:20,257 INFO L130 PetriNetUnfolder]: For 976/1497 co-relation queries the response was YES. [2022-01-19 05:00:20,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 364 events. 69/364 cut-off events. For 976/1497 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1853 event pairs, 16 based on Foata normal form. 12/357 useless extension candidates. Maximal degree in co-relation 1079. Up to 65 conditions per place. [2022-01-19 05:00:20,260 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 25 selfloop transitions, 8 changer transitions 31/118 dead transitions. [2022-01-19 05:00:20,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 768 flow [2022-01-19 05:00:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 05:00:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 05:00:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 801 transitions. [2022-01-19 05:00:20,263 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.791501976284585 [2022-01-19 05:00:20,263 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 801 transitions. [2022-01-19 05:00:20,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 801 transitions. [2022-01-19 05:00:20,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:20,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 801 transitions. [2022-01-19 05:00:20,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.81818181818181) internal successors, (801), 11 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,269 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,269 INFO L186 Difference]: Start difference. First operand has 122 places, 85 transitions, 352 flow. Second operand 11 states and 801 transitions. [2022-01-19 05:00:20,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 768 flow [2022-01-19 05:00:20,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 668 flow, removed 50 selfloop flow, removed 12 redundant places. [2022-01-19 05:00:20,276 INFO L242 Difference]: Finished difference. Result has 117 places, 81 transitions, 336 flow [2022-01-19 05:00:20,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=336, PETRI_PLACES=117, PETRI_TRANSITIONS=81} [2022-01-19 05:00:20,277 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 33 predicate places. [2022-01-19 05:00:20,277 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 81 transitions, 336 flow [2022-01-19 05:00:20,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,277 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:20,278 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:20,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 05:00:20,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:20,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:20,278 INFO L85 PathProgramCache]: Analyzing trace with hash 58466002, now seen corresponding path program 1 times [2022-01-19 05:00:20,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:20,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149989772] [2022-01-19 05:00:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:20,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:20,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:20,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149989772] [2022-01-19 05:00:20,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149989772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:20,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:20,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 05:00:20,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68670209] [2022-01-19 05:00:20,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:20,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 05:00:20,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 05:00:20,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 05:00:20,361 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 05:00:20,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 81 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:20,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 05:00:20,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:20,504 INFO L129 PetriNetUnfolder]: 168/545 cut-off events. [2022-01-19 05:00:20,504 INFO L130 PetriNetUnfolder]: For 400/491 co-relation queries the response was YES. [2022-01-19 05:00:20,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 545 events. 168/545 cut-off events. For 400/491 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3326 event pairs, 17 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 1060. Up to 121 conditions per place. [2022-01-19 05:00:20,509 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 25 selfloop transitions, 14 changer transitions 7/113 dead transitions. [2022-01-19 05:00:20,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 496 flow [2022-01-19 05:00:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 05:00:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 05:00:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-01-19 05:00:20,512 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-01-19 05:00:20,512 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-01-19 05:00:20,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-01-19 05:00:20,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:20,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-01-19 05:00:20,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,518 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,518 INFO L186 Difference]: Start difference. First operand has 117 places, 81 transitions, 336 flow. Second operand 10 states and 798 transitions. [2022-01-19 05:00:20,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 496 flow [2022-01-19 05:00:20,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 437 flow, removed 15 selfloop flow, removed 16 redundant places. [2022-01-19 05:00:20,522 INFO L242 Difference]: Finished difference. Result has 110 places, 93 transitions, 380 flow [2022-01-19 05:00:20,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2022-01-19 05:00:20,524 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2022-01-19 05:00:20,524 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 380 flow [2022-01-19 05:00:20,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,525 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:20,525 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:20,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 05:00:20,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:20,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1928606749, now seen corresponding path program 1 times [2022-01-19 05:00:20,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:20,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897348700] [2022-01-19 05:00:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:20,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:20,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:20,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897348700] [2022-01-19 05:00:20,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897348700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:20,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:20,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 05:00:20,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89881972] [2022-01-19 05:00:20,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:20,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 05:00:20,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 05:00:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 05:00:20,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 05:00:20,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:20,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 05:00:20,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:20,832 INFO L129 PetriNetUnfolder]: 148/521 cut-off events. [2022-01-19 05:00:20,833 INFO L130 PetriNetUnfolder]: For 1038/1132 co-relation queries the response was YES. [2022-01-19 05:00:20,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 521 events. 148/521 cut-off events. For 1038/1132 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3361 event pairs, 0 based on Foata normal form. 19/501 useless extension candidates. Maximal degree in co-relation 1570. Up to 146 conditions per place. [2022-01-19 05:00:20,839 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 21 selfloop transitions, 26 changer transitions 17/131 dead transitions. [2022-01-19 05:00:20,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 744 flow [2022-01-19 05:00:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 05:00:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 05:00:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1035 transitions. [2022-01-19 05:00:20,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8653846153846154 [2022-01-19 05:00:20,842 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1035 transitions. [2022-01-19 05:00:20,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1035 transitions. [2022-01-19 05:00:20,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:20,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1035 transitions. [2022-01-19 05:00:20,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.61538461538461) internal successors, (1035), 13 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,848 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,848 INFO L186 Difference]: Start difference. First operand has 110 places, 93 transitions, 380 flow. Second operand 13 states and 1035 transitions. [2022-01-19 05:00:20,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 744 flow [2022-01-19 05:00:20,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 131 transitions, 736 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 05:00:20,856 INFO L242 Difference]: Finished difference. Result has 126 places, 105 transitions, 543 flow [2022-01-19 05:00:20,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2022-01-19 05:00:20,858 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 42 predicate places. [2022-01-19 05:00:20,858 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 543 flow [2022-01-19 05:00:20,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 05:00:20,859 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:20,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 05:00:20,859 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 05:00:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 05:00:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash -366721664, now seen corresponding path program 1 times [2022-01-19 05:00:20,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 05:00:20,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582472898] [2022-01-19 05:00:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 05:00:20,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 05:00:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 05:00:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 05:00:20,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 05:00:20,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582472898] [2022-01-19 05:00:20,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582472898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 05:00:20,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 05:00:20,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 05:00:20,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217370547] [2022-01-19 05:00:20,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 05:00:20,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 05:00:20,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 05:00:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 05:00:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 05:00:20,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 05:00:20,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 543 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:20,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 05:00:20,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 05:00:20,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 05:00:21,220 INFO L129 PetriNetUnfolder]: 94/380 cut-off events. [2022-01-19 05:00:21,220 INFO L130 PetriNetUnfolder]: For 1551/1700 co-relation queries the response was YES. [2022-01-19 05:00:21,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 380 events. 94/380 cut-off events. For 1551/1700 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2373 event pairs, 0 based on Foata normal form. 14/357 useless extension candidates. Maximal degree in co-relation 1404. Up to 88 conditions per place. [2022-01-19 05:00:21,223 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 0 selfloop transitions, 0 changer transitions 123/123 dead transitions. [2022-01-19 05:00:21,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 803 flow [2022-01-19 05:00:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 05:00:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 05:00:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1250 transitions. [2022-01-19 05:00:21,227 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8491847826086957 [2022-01-19 05:00:21,227 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1250 transitions. [2022-01-19 05:00:21,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1250 transitions. [2022-01-19 05:00:21,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 05:00:21,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1250 transitions. [2022-01-19 05:00:21,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:21,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:21,234 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:21,234 INFO L186 Difference]: Start difference. First operand has 126 places, 105 transitions, 543 flow. Second operand 16 states and 1250 transitions. [2022-01-19 05:00:21,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 803 flow [2022-01-19 05:00:21,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 123 transitions, 739 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-01-19 05:00:21,243 INFO L242 Difference]: Finished difference. Result has 129 places, 0 transitions, 0 flow [2022-01-19 05:00:21,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=129, PETRI_TRANSITIONS=0} [2022-01-19 05:00:21,244 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 45 predicate places. [2022-01-19 05:00:21,244 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 0 transitions, 0 flow [2022-01-19 05:00:21,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 05:00:21,246 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 05:00:21,247 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 05:00:21,247 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 05:00:21,247 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 05:00:21,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 05:00:21,250 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-19 05:00:21,251 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 05:00:21,251 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 05:00:21,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 05:00:21 BasicIcfg [2022-01-19 05:00:21,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 05:00:21,254 INFO L158 Benchmark]: Toolchain (without parser) took 4407.46ms. Allocated memory was 413.1MB in the beginning and 547.4MB in the end (delta: 134.2MB). Free memory was 352.9MB in the beginning and 484.8MB in the end (delta: -131.8MB). Peak memory consumption was 5.4MB. Max. memory is 16.0GB. [2022-01-19 05:00:21,254 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 413.1MB. Free memory is still 371.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 05:00:21,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.15ms. Allocated memory was 413.1MB in the beginning and 547.4MB in the end (delta: 134.2MB). Free memory was 352.8MB in the beginning and 507.1MB in the end (delta: -154.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. [2022-01-19 05:00:21,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.88ms. Allocated memory is still 547.4MB. Free memory was 507.1MB in the beginning and 504.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:21,255 INFO L158 Benchmark]: Boogie Preprocessor took 39.33ms. Allocated memory is still 547.4MB. Free memory was 504.1MB in the beginning and 502.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 05:00:21,256 INFO L158 Benchmark]: RCFGBuilder took 438.98ms. Allocated memory is still 547.4MB. Free memory was 502.9MB in the beginning and 490.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 05:00:21,256 INFO L158 Benchmark]: TraceAbstraction took 3373.61ms. Allocated memory is still 547.4MB. Free memory was 489.4MB in the beginning and 484.8MB in the end (delta: 4.6MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. [2022-01-19 05:00:21,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 413.1MB. Free memory is still 371.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 493.15ms. Allocated memory was 413.1MB in the beginning and 547.4MB in the end (delta: 134.2MB). Free memory was 352.8MB in the beginning and 507.1MB in the end (delta: -154.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.88ms. Allocated memory is still 547.4MB. Free memory was 507.1MB in the beginning and 504.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.33ms. Allocated memory is still 547.4MB. Free memory was 504.1MB in the beginning and 502.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 438.98ms. Allocated memory is still 547.4MB. Free memory was 502.9MB in the beginning and 490.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3373.61ms. Allocated memory is still 547.4MB. Free memory was 489.4MB in the beginning and 484.8MB in the end (delta: 4.6MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 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: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 340 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 340 mSDsluCounter, 392 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 440 IncrementalHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 90 mSDtfsCounter, 440 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=543occurred in iteration=6, InterpolantAutomatonStates: 89, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 1992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 05:00:21,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...