/usr/bin/java -Xmx8000000000 -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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:29:24,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:29:24,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:29:24,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:29:24,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:29:24,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:29:24,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:29:24,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:29:24,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:29:24,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:29:24,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:29:24,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:29:24,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:29:24,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:29:24,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:29:24,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:29:24,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:29:24,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:29:24,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:29:24,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:29:24,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:29:24,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:29:24,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:29:24,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:29:24,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:29:24,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:29:24,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:29:24,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:29:24,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:29:24,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:29:24,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:29:24,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:29:24,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:29:24,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:29:24,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:29:24,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:29:24,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:29:24,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:29:24,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:29:24,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:29:24,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:29:24,640 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-SemanticLbe.epf [2022-12-12 18:29:24,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:29:24,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:29:24,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:29:24,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:29:24,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:29:24,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:29:24,683 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:29:24,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:29:24,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:29:24,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:29:24,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:29:24,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:29:24,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:29:24,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:29:24,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:29:24,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:29:24,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:29:24,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:29:24,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:29:24,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:29:24,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:29:24,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:29:24,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:29:24,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:29:24,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:29:24,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:29:24,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:29:24,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:29:24,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:29:24,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:29:24,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:29:24,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:29:25,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:29:25,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:29:25,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:29:25,018 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:29:25,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2022-12-12 18:29:26,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:29:26,314 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:29:26,314 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2022-12-12 18:29:26,324 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8289d40d7/f34c20b2b7634d209fc049d4da46c333/FLAG991dce4ab [2022-12-12 18:29:26,337 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8289d40d7/f34c20b2b7634d209fc049d4da46c333 [2022-12-12 18:29:26,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:29:26,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:29:26,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:29:26,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:29:26,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:29:26,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7d48b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26, skipping insertion in model container [2022-12-12 18:29:26,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:29:26,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:29:26,556 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 18:29:26,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,696 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2022-12-12 18:29:26,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,709 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2022-12-12 18:29:26,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,711 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:29:26,726 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:29:26,746 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 18:29:26,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,770 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2022-12-12 18:29:26,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,771 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,772 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,773 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,774 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2022-12-12 18:29:26,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:26,774 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:26,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:29:26,813 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:29:26,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26 WrapperNode [2022-12-12 18:29:26,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:29:26,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:29:26,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:29:26,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:29:26,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,854 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-12-12 18:29:26,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:29:26,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:29:26,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:29:26,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:29:26,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,899 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:29:26,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:29:26,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:29:26,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:29:26,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (1/1) ... [2022-12-12 18:29:26,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:29:26,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:26,941 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) [2022-12-12 18:29:26,971 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 [2022-12-12 18:29:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 18:29:26,993 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-12 18:29:26,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-12 18:29:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-12 18:29:26,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-12 18:29:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:29:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:29:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:29:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:29:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:29:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:29:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:29:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:29:26,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:29:26,996 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:29:27,143 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:29:27,144 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:29:27,300 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:29:27,305 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:29:27,305 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 18:29:27,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:29:27 BoogieIcfgContainer [2022-12-12 18:29:27,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:29:27,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:29:27,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:29:27,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:29:27,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:29:26" (1/3) ... [2022-12-12 18:29:27,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64afb3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:29:27, skipping insertion in model container [2022-12-12 18:29:27,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:26" (2/3) ... [2022-12-12 18:29:27,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64afb3fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:29:27, skipping insertion in model container [2022-12-12 18:29:27,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:29:27" (3/3) ... [2022-12-12 18:29:27,314 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2022-12-12 18:29:27,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:29:27,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 18:29:27,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:29:27,386 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 18:29:27,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 172 flow [2022-12-12 18:29:27,447 INFO L130 PetriNetUnfolder]: 6/76 cut-off events. [2022-12-12 18:29:27,447 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:27,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 6/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-12 18:29:27,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 172 flow [2022-12-12 18:29:27,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 143 flow [2022-12-12 18:29:27,456 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:29:27,474 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 143 flow [2022-12-12 18:29:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 143 flow [2022-12-12 18:29:27,498 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2022-12-12 18:29:27,498 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:27,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 67 events. 6/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-12 18:29:27,501 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 143 flow [2022-12-12 18:29:27,501 INFO L226 LiptonReduction]: Number of co-enabled transitions 1188 [2022-12-12 18:29:29,325 INFO L241 LiptonReduction]: Total number of compositions: 43 [2022-12-12 18:29:29,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:29:29,355 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@737f95a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:29:29,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-12 18:29:29,366 INFO L130 PetriNetUnfolder]: 2/30 cut-off events. [2022-12-12 18:29:29,366 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:29:29,366 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:29,367 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:29,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash 612009507, now seen corresponding path program 1 times [2022-12-12 18:29:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:29,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844297660] [2022-12-12 18:29:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:29,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:29,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:29,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844297660] [2022-12-12 18:29:29,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844297660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:29,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:29,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:29:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998356761] [2022-12-12 18:29:29,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:29,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:29:29,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:29,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:29:29,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:29:29,676 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2022-12-12 18:29:29,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:29,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:29,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2022-12-12 18:29:29,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:29,855 INFO L130 PetriNetUnfolder]: 452/939 cut-off events. [2022-12-12 18:29:29,855 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-12-12 18:29:29,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 939 events. 452/939 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6129 event pairs, 204 based on Foata normal form. 35/546 useless extension candidates. Maximal degree in co-relation 1629. Up to 418 conditions per place. [2022-12-12 18:29:29,862 INFO L137 encePairwiseOnDemand]: 39/48 looper letters, 34 selfloop transitions, 5 changer transitions 3/60 dead transitions. [2022-12-12 18:29:29,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 216 flow [2022-12-12 18:29:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:29:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:29:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2022-12-12 18:29:29,872 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-12-12 18:29:29,875 INFO L295 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2022-12-12 18:29:29,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 60 transitions, 216 flow [2022-12-12 18:29:29,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 57 transitions, 204 flow [2022-12-12 18:29:29,880 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 204 flow [2022-12-12 18:29:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:29,881 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:29,881 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:29,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:29:29,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2024234379, now seen corresponding path program 1 times [2022-12-12 18:29:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:29,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351461282] [2022-12-12 18:29:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:29,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351461282] [2022-12-12 18:29:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351461282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:29,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:29,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:29:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086561408] [2022-12-12 18:29:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:29:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:29:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:29:29,949 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2022-12-12 18:29:29,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:29,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:29,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2022-12-12 18:29:29,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:30,043 INFO L130 PetriNetUnfolder]: 331/743 cut-off events. [2022-12-12 18:29:30,043 INFO L131 PetriNetUnfolder]: For 81/205 co-relation queries the response was YES. [2022-12-12 18:29:30,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 743 events. 331/743 cut-off events. For 81/205 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4895 event pairs, 191 based on Foata normal form. 29/444 useless extension candidates. Maximal degree in co-relation 1851. Up to 363 conditions per place. [2022-12-12 18:29:30,049 INFO L137 encePairwiseOnDemand]: 42/48 looper letters, 28 selfloop transitions, 4 changer transitions 5/55 dead transitions. [2022-12-12 18:29:30,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 270 flow [2022-12-12 18:29:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:29:30,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:29:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2022-12-12 18:29:30,053 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2022-12-12 18:29:30,053 INFO L295 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2022-12-12 18:29:30,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 55 transitions, 270 flow [2022-12-12 18:29:30,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 50 transitions, 237 flow [2022-12-12 18:29:30,056 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 237 flow [2022-12-12 18:29:30,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:30,057 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:30,057 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:30,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:29:30,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:30,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2108346216, now seen corresponding path program 1 times [2022-12-12 18:29:30,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:30,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484984917] [2022-12-12 18:29:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:30,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:30,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484984917] [2022-12-12 18:29:30,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484984917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:30,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:30,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 18:29:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097102361] [2022-12-12 18:29:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 18:29:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 18:29:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 18:29:30,193 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2022-12-12 18:29:30,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:30,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:30,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2022-12-12 18:29:30,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:30,578 INFO L130 PetriNetUnfolder]: 1022/1883 cut-off events. [2022-12-12 18:29:30,578 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2022-12-12 18:29:30,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 1883 events. 1022/1883 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10904 event pairs, 148 based on Foata normal form. 0/1344 useless extension candidates. Maximal degree in co-relation 5630. Up to 891 conditions per place. [2022-12-12 18:29:30,586 INFO L137 encePairwiseOnDemand]: 36/48 looper letters, 59 selfloop transitions, 11 changer transitions 65/143 dead transitions. [2022-12-12 18:29:30,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 143 transitions, 947 flow [2022-12-12 18:29:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 18:29:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 18:29:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2022-12-12 18:29:30,588 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2022-12-12 18:29:30,589 INFO L295 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2022-12-12 18:29:30,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 143 transitions, 947 flow [2022-12-12 18:29:30,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 78 transitions, 500 flow [2022-12-12 18:29:30,594 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 78 transitions, 500 flow [2022-12-12 18:29:30,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:30,594 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:30,594 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:30,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:29:30,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-12 18:29:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1080408466, now seen corresponding path program 2 times [2022-12-12 18:29:30,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:30,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232721183] [2022-12-12 18:29:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:30,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232721183] [2022-12-12 18:29:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232721183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:30,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:30,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 18:29:30,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810502928] [2022-12-12 18:29:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 18:29:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 18:29:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 18:29:30,697 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2022-12-12 18:29:30,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 78 transitions, 500 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:30,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:30,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2022-12-12 18:29:30,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:30,932 INFO L130 PetriNetUnfolder]: 630/1117 cut-off events. [2022-12-12 18:29:30,932 INFO L131 PetriNetUnfolder]: For 844/844 co-relation queries the response was YES. [2022-12-12 18:29:30,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 1117 events. 630/1117 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5401 event pairs, 15 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 4318. Up to 591 conditions per place. [2022-12-12 18:29:30,936 INFO L137 encePairwiseOnDemand]: 35/48 looper letters, 0 selfloop transitions, 0 changer transitions 173/173 dead transitions. [2022-12-12 18:29:30,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 173 transitions, 1445 flow [2022-12-12 18:29:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 18:29:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 18:29:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2022-12-12 18:29:30,938 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4395833333333333 [2022-12-12 18:29:30,938 INFO L295 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2022-12-12 18:29:30,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 173 transitions, 1445 flow [2022-12-12 18:29:30,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 18:29:30,940 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 18:29:30,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:30,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-12 18:29:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-12 18:29:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-12 18:29:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-12 18:29:30,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-12 18:29:30,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-12 18:29:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:29:30,944 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-12 18:29:30,948 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:29:30,948 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:29:30,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:29:30 BasicIcfg [2022-12-12 18:29:30,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:29:30,952 INFO L158 Benchmark]: Toolchain (without parser) took 4611.08ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 154.2MB in the beginning and 91.0MB in the end (delta: 63.2MB). Peak memory consumption was 100.4MB. Max. memory is 8.0GB. [2022-12-12 18:29:30,952 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:29:30,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.93ms. Allocated memory is still 179.3MB. Free memory was 154.2MB in the beginning and 131.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 18:29:30,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.42ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 129.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 18:29:30,953 INFO L158 Benchmark]: Boogie Preprocessor took 46.20ms. Allocated memory is still 179.3MB. Free memory was 129.5MB in the beginning and 128.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:29:30,953 INFO L158 Benchmark]: RCFGBuilder took 404.20ms. Allocated memory is still 179.3MB. Free memory was 128.0MB in the beginning and 114.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 18:29:30,954 INFO L158 Benchmark]: TraceAbstraction took 3641.82ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 113.3MB in the beginning and 91.0MB in the end (delta: 22.3MB). Peak memory consumption was 59.5MB. Max. memory is 8.0GB. [2022-12-12 18:29:30,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 472.93ms. Allocated memory is still 179.3MB. Free memory was 154.2MB in the beginning and 131.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.42ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 129.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.20ms. Allocated memory is still 179.3MB. Free memory was 129.5MB in the beginning and 128.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 404.20ms. Allocated memory is still 179.3MB. Free memory was 128.0MB in the beginning and 114.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3641.82ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 113.3MB in the beginning and 91.0MB in the end (delta: 22.3MB). Peak memory consumption was 59.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 68 PlacesBefore, 52 PlacesAfterwards, 67 TransitionsBefore, 48 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 18 ConcurrentYvCompositions, 4 ChoiceCompositions, 43 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1316, independent: 1231, independent conditional: 1231, independent unconditional: 0, dependent: 85, dependent conditional: 85, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1316, independent: 1231, independent conditional: 0, independent unconditional: 1231, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1316, independent: 1231, independent conditional: 0, independent unconditional: 1231, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1316, independent: 1231, independent conditional: 0, independent unconditional: 1231, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 796, independent: 762, independent conditional: 0, independent unconditional: 762, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 796, independent: 750, independent conditional: 0, independent unconditional: 750, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1316, independent: 469, independent conditional: 0, independent unconditional: 469, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 796, unknown conditional: 0, unknown unconditional: 796] , Statistics on independence cache: Total cache size (in pairs): 1295, Positive cache size: 1261, Positive conditional cache size: 0, Positive unconditional cache size: 1261, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: 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 5 procedures, 107 locations, 6 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: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 738 IncrementalHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 44 mSDtfsCounter, 738 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1937 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 18:29:30,975 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...