/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 --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 21:44:12,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 21:44:12,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 21:44:12,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 21:44:12,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 21:44:12,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 21:44:12,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 21:44:12,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 21:44:12,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 21:44:12,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 21:44:12,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 21:44:12,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 21:44:12,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 21:44:12,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 21:44:12,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 21:44:12,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 21:44:12,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 21:44:12,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 21:44:12,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 21:44:12,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 21:44:12,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 21:44:12,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 21:44:12,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 21:44:12,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 21:44:12,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 21:44:12,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 21:44:12,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 21:44:12,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 21:44:12,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 21:44:12,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 21:44:12,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 21:44:12,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 21:44:12,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 21:44:12,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 21:44:12,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 21:44:12,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 21:44:12,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 21:44:12,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 21:44:12,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 21:44:12,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 21:44:12,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 21:44:12,851 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 21:44:12,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 21:44:12,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 21:44:12,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 21:44:12,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 21:44:12,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 21:44:12,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 21:44:12,883 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 21:44:12,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 21:44:12,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 21:44:12,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 21:44:12,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 21:44:12,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 21:44:12,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 21:44:12,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 21:44:12,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 21:44:12,894 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 21:44:12,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 21:44:12,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 21:44:12,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 21:44:12,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 21:44:12,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 21:44:12,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 21:44:12,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 21:44:12,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:44:12,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 21:44:12,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 21:44:12,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 21:44:12,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 21:44:12,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 21:44:12,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 21:44:12,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 21:44:13,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 21:44:13,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 21:44:13,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 21:44:13,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 21:44:13,201 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 21:44:13,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037.i [2022-12-12 21:44:14,217 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 21:44:14,427 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 21:44:14,428 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i [2022-12-12 21:44:14,444 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b158b5395/e1045310ce254427a99977600021de94/FLAG105184597 [2022-12-12 21:44:14,462 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b158b5395/e1045310ce254427a99977600021de94 [2022-12-12 21:44:14,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 21:44:14,465 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 21:44:14,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 21:44:14,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 21:44:14,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 21:44:14,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35dfa45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14, skipping insertion in model container [2022-12-12 21:44:14,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 21:44:14,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 21:44:14,618 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-wmm/safe037.i[941,954] [2022-12-12 21:44:14,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,758 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,759 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,760 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,761 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,762 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,763 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,775 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:44:14,787 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 21:44:14,799 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-wmm/safe037.i[941,954] [2022-12-12 21:44:14,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 21:44:14,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 21:44:14,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 21:44:14,873 INFO L208 MainTranslator]: Completed translation [2022-12-12 21:44:14,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14 WrapperNode [2022-12-12 21:44:14,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 21:44:14,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 21:44:14,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 21:44:14,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 21:44:14,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,920 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-12-12 21:44:14,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 21:44:14,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 21:44:14,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 21:44:14,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 21:44:14,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 21:44:14,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 21:44:14,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 21:44:14,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 21:44:14,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (1/1) ... [2022-12-12 21:44:14,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 21:44:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 21:44:14,984 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 21:44:15,002 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 21:44:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 21:44:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 21:44:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 21:44:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 21:44:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 21:44:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 21:44:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 21:44:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 21:44:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 21:44:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 21:44:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 21:44:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 21:44:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 21:44:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 21:44:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 21:44:15,022 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 21:44:15,169 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 21:44:15,178 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 21:44:15,319 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 21:44:15,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 21:44:15,324 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 21:44:15,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:44:15 BoogieIcfgContainer [2022-12-12 21:44:15,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 21:44:15,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 21:44:15,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 21:44:15,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 21:44:15,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 09:44:14" (1/3) ... [2022-12-12 21:44:15,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4088af45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:44:15, skipping insertion in model container [2022-12-12 21:44:15,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 09:44:14" (2/3) ... [2022-12-12 21:44:15,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4088af45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 09:44:15, skipping insertion in model container [2022-12-12 21:44:15,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 09:44:15" (3/3) ... [2022-12-12 21:44:15,335 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2022-12-12 21:44:15,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 21:44:15,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 21:44:15,350 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 21:44:15,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 21:44:15,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2022-12-12 21:44:15,533 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2022-12-12 21:44:15,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:44:15,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 21:44:15,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2022-12-12 21:44:15,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2022-12-12 21:44:15,543 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 21:44:15,570 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2022-12-12 21:44:15,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2022-12-12 21:44:15,594 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-12-12 21:44:15,594 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:44:15,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 21:44:15,598 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2022-12-12 21:44:15,598 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 21:44:17,565 INFO L241 LiptonReduction]: Total number of compositions: 54 [2022-12-12 21:44:17,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 21:44:17,582 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;@56be79ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 21:44:17,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 21:44:17,586 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2022-12-12 21:44:17,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 21:44:17,587 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:17,587 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:17,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:44:17,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1517846936, now seen corresponding path program 1 times [2022-12-12 21:44:17,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:17,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440383704] [2022-12-12 21:44:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:17,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:17,981 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 21:44:17,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:17,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440383704] [2022-12-12 21:44:17,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440383704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:17,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:17,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 21:44:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538354825] [2022-12-12 21:44:17,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:17,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:44:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:44:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:44:18,004 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:44:18,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:44:18,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:18,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:44:18,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:18,197 INFO L130 PetriNetUnfolder]: 951/1512 cut-off events. [2022-12-12 21:44:18,197 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-12 21:44:18,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1512 events. 951/1512 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8037 event pairs, 81 based on Foata normal form. 125/1034 useless extension candidates. Maximal degree in co-relation 3064. Up to 739 conditions per place. [2022-12-12 21:44:18,208 INFO L137 encePairwiseOnDemand]: 14/27 looper letters, 37 selfloop transitions, 11 changer transitions 1/55 dead transitions. [2022-12-12 21:44:18,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 223 flow [2022-12-12 21:44:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:44:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:44:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2022-12-12 21:44:18,218 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7129629629629629 [2022-12-12 21:44:18,222 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2022-12-12 21:44:18,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 55 transitions, 223 flow [2022-12-12 21:44:18,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 54 transitions, 219 flow [2022-12-12 21:44:18,230 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 54 transitions, 219 flow [2022-12-12 21:44:18,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:44:18,230 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:18,230 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:18,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 21:44:18,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:44:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash -704738502, now seen corresponding path program 1 times [2022-12-12 21:44:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838310109] [2022-12-12 21:44:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:18,391 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 21:44:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:18,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838310109] [2022-12-12 21:44:18,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838310109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:18,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:18,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:44:18,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046257692] [2022-12-12 21:44:18,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:18,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 21:44:18,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 21:44:18,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 21:44:18,394 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:44:18,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 54 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 21:44:18,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:18,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:44:18,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:18,539 INFO L130 PetriNetUnfolder]: 651/1131 cut-off events. [2022-12-12 21:44:18,539 INFO L131 PetriNetUnfolder]: For 36/42 co-relation queries the response was YES. [2022-12-12 21:44:18,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 1131 events. 651/1131 cut-off events. For 36/42 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6122 event pairs, 15 based on Foata normal form. 117/817 useless extension candidates. Maximal degree in co-relation 3417. Up to 667 conditions per place. [2022-12-12 21:44:18,545 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 42 selfloop transitions, 20 changer transitions 25/93 dead transitions. [2022-12-12 21:44:18,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 93 transitions, 552 flow [2022-12-12 21:44:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 21:44:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 21:44:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2022-12-12 21:44:18,548 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-12-12 21:44:18,549 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-12 21:44:18,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 93 transitions, 552 flow [2022-12-12 21:44:18,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 68 transitions, 402 flow [2022-12-12 21:44:18,553 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 68 transitions, 402 flow [2022-12-12 21:44:18,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 21:44:18,554 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:18,554 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 21:44:18,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:44:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:18,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1500957224, now seen corresponding path program 1 times [2022-12-12 21:44:18,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:18,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700904628] [2022-12-12 21:44:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:18,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:18,670 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 21:44:18,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:18,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700904628] [2022-12-12 21:44:18,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700904628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:18,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:18,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:44:18,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957560277] [2022-12-12 21:44:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:18,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:44:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:18,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:44:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:44:18,672 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 21:44:18,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 68 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 21:44:18,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:18,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 21:44:18,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:18,816 INFO L130 PetriNetUnfolder]: 799/1434 cut-off events. [2022-12-12 21:44:18,816 INFO L131 PetriNetUnfolder]: For 495/546 co-relation queries the response was YES. [2022-12-12 21:44:18,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 1434 events. 799/1434 cut-off events. For 495/546 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8669 event pairs, 12 based on Foata normal form. 72/1221 useless extension candidates. Maximal degree in co-relation 5406. Up to 735 conditions per place. [2022-12-12 21:44:18,823 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 72 selfloop transitions, 5 changer transitions 28/122 dead transitions. [2022-12-12 21:44:18,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 122 transitions, 947 flow [2022-12-12 21:44:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:44:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:44:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2022-12-12 21:44:18,824 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-12 21:44:18,825 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-12-12 21:44:18,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 122 transitions, 947 flow [2022-12-12 21:44:18,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 94 transitions, 717 flow [2022-12-12 21:44:18,831 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 94 transitions, 717 flow [2022-12-12 21:44:18,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 21:44:18,831 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:18,831 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:18,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 21:44:18,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:44:18,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash -695275086, now seen corresponding path program 1 times [2022-12-12 21:44:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:18,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192810260] [2022-12-12 21:44:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:18,916 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 21:44:18,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:18,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192810260] [2022-12-12 21:44:18,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192810260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:18,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:18,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 21:44:18,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545542376] [2022-12-12 21:44:18,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:18,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 21:44:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 21:44:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 21:44:18,918 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:44:18,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 94 transitions, 717 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 21:44:18,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:18,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:44:18,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:19,034 INFO L130 PetriNetUnfolder]: 392/873 cut-off events. [2022-12-12 21:44:19,034 INFO L131 PetriNetUnfolder]: For 625/755 co-relation queries the response was YES. [2022-12-12 21:44:19,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 873 events. 392/873 cut-off events. For 625/755 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5444 event pairs, 12 based on Foata normal form. 121/841 useless extension candidates. Maximal degree in co-relation 4014. Up to 519 conditions per place. [2022-12-12 21:44:19,038 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 26 selfloop transitions, 37 changer transitions 26/94 dead transitions. [2022-12-12 21:44:19,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 94 transitions, 891 flow [2022-12-12 21:44:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 21:44:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 21:44:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2022-12-12 21:44:19,040 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2022-12-12 21:44:19,040 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-12-12 21:44:19,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 94 transitions, 891 flow [2022-12-12 21:44:19,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 68 transitions, 648 flow [2022-12-12 21:44:19,044 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 68 transitions, 648 flow [2022-12-12 21:44:19,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 21:44:19,044 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:19,044 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:19,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 21:44:19,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:44:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash 83392483, now seen corresponding path program 1 times [2022-12-12 21:44:19,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:19,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356890839] [2022-12-12 21:44:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:19,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:19,115 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 21:44:19,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:19,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356890839] [2022-12-12 21:44:19,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356890839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:19,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:19,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:44:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077138340] [2022-12-12 21:44:19,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:19,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:44:19,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:44:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:44:19,117 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 21:44:19,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 68 transitions, 648 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 21:44:19,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:19,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 21:44:19,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:19,222 INFO L130 PetriNetUnfolder]: 417/884 cut-off events. [2022-12-12 21:44:19,223 INFO L131 PetriNetUnfolder]: For 1290/1308 co-relation queries the response was YES. [2022-12-12 21:44:19,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 884 events. 417/884 cut-off events. For 1290/1308 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5398 event pairs, 17 based on Foata normal form. 37/729 useless extension candidates. Maximal degree in co-relation 4709. Up to 679 conditions per place. [2022-12-12 21:44:19,228 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 50 selfloop transitions, 3 changer transitions 35/101 dead transitions. [2022-12-12 21:44:19,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 101 transitions, 1146 flow [2022-12-12 21:44:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:44:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:44:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2022-12-12 21:44:19,232 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2022-12-12 21:44:19,234 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2022-12-12 21:44:19,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 101 transitions, 1146 flow [2022-12-12 21:44:19,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 66 transitions, 734 flow [2022-12-12 21:44:19,238 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 734 flow [2022-12-12 21:44:19,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 21:44:19,239 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 21:44:19,239 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 21:44:19,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 21:44:19,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 21:44:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 21:44:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1097525286, now seen corresponding path program 1 times [2022-12-12 21:44:19,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 21:44:19,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123459539] [2022-12-12 21:44:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 21:44:19,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 21:44:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 21:44:19,348 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 21:44:19,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 21:44:19,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123459539] [2022-12-12 21:44:19,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123459539] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 21:44:19,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 21:44:19,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 21:44:19,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218387434] [2022-12-12 21:44:19,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 21:44:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 21:44:19,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 21:44:19,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 21:44:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 21:44:19,350 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 21:44:19,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 734 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 21:44:19,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 21:44:19,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 21:44:19,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 21:44:19,439 INFO L130 PetriNetUnfolder]: 286/580 cut-off events. [2022-12-12 21:44:19,439 INFO L131 PetriNetUnfolder]: For 1570/1609 co-relation queries the response was YES. [2022-12-12 21:44:19,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 580 events. 286/580 cut-off events. For 1570/1609 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2879 event pairs, 0 based on Foata normal form. 36/487 useless extension candidates. Maximal degree in co-relation 3585. Up to 462 conditions per place. [2022-12-12 21:44:19,441 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-12-12 21:44:19,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 96 transitions, 1258 flow [2022-12-12 21:44:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 21:44:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 21:44:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2022-12-12 21:44:19,442 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-12 21:44:19,444 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-12-12 21:44:19,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 96 transitions, 1258 flow [2022-12-12 21:44:19,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 21:44:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 21:44:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 21:44:19,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 21:44:19,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 21:44:19,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 21:44:19,453 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 21:44:19,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 21:44:19,455 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-12 21:44:19,458 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 21:44:19,458 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 21:44:19,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 09:44:19 BasicIcfg [2022-12-12 21:44:19,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 21:44:19,467 INFO L158 Benchmark]: Toolchain (without parser) took 4997.48ms. Allocated memory was 216.0MB in the beginning and 262.1MB in the end (delta: 46.1MB). Free memory was 184.5MB in the beginning and 141.8MB in the end (delta: 42.7MB). Peak memory consumption was 89.9MB. Max. memory is 8.0GB. [2022-12-12 21:44:19,467 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory was 194.2MB in the beginning and 194.1MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 21:44:19,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.67ms. Allocated memory is still 216.0MB. Free memory was 183.9MB in the beginning and 160.4MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 21:44:19,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.42ms. Allocated memory is still 216.0MB. Free memory was 160.4MB in the beginning and 158.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 21:44:19,468 INFO L158 Benchmark]: Boogie Preprocessor took 28.88ms. Allocated memory is still 216.0MB. Free memory was 158.3MB in the beginning and 156.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 21:44:19,468 INFO L158 Benchmark]: RCFGBuilder took 366.25ms. Allocated memory is still 216.0MB. Free memory was 156.7MB in the beginning and 143.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 21:44:19,468 INFO L158 Benchmark]: TraceAbstraction took 4134.78ms. Allocated memory was 216.0MB in the beginning and 262.1MB in the end (delta: 46.1MB). Free memory was 142.0MB in the beginning and 141.8MB in the end (delta: 225.3kB). Peak memory consumption was 46.9MB. Max. memory is 8.0GB. [2022-12-12 21:44:19,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory was 194.2MB in the beginning and 194.1MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 406.67ms. Allocated memory is still 216.0MB. Free memory was 183.9MB in the beginning and 160.4MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.42ms. Allocated memory is still 216.0MB. Free memory was 160.4MB in the beginning and 158.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.88ms. Allocated memory is still 216.0MB. Free memory was 158.3MB in the beginning and 156.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 366.25ms. Allocated memory is still 216.0MB. Free memory was 156.7MB in the beginning and 143.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4134.78ms. Allocated memory was 216.0MB in the beginning and 262.1MB in the end (delta: 46.1MB). Free memory was 142.0MB in the beginning and 141.8MB in the end (delta: 225.3kB). Peak memory consumption was 46.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 80 PlacesBefore, 36 PlacesAfterwards, 71 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1047, independent: 989, independent conditional: 989, independent unconditional: 0, dependent: 58, dependent conditional: 58, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1047, independent: 989, independent conditional: 0, independent unconditional: 989, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1047, independent: 989, independent conditional: 0, independent unconditional: 989, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1047, independent: 989, independent conditional: 0, independent unconditional: 989, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 815, independent: 774, independent conditional: 0, independent unconditional: 774, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 815, independent: 752, independent conditional: 0, independent unconditional: 752, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1047, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 815, unknown conditional: 0, unknown unconditional: 815] , Statistics on independence cache: Total cache size (in pairs): 1143, Positive cache size: 1102, Positive conditional cache size: 0, Positive unconditional cache size: 1102, Negative cache size: 41, Negative conditional cache size: 0, Negative unconditional cache size: 41, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - 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, 109 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: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 219 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 390 IncrementalHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 6 mSDtfsCounter, 390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=734occurred in iteration=5, InterpolantAutomatonStates: 27, 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, 6 MinimizatonAttempts, 2297 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2022-12-12 21:44:19,485 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...