/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 06:44:33,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 06:44:33,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 06:44:33,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 06:44:33,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 06:44:33,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 06:44:33,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 06:44:33,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 06:44:33,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 06:44:33,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 06:44:33,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 06:44:33,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 06:44:33,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 06:44:33,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 06:44:33,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 06:44:33,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 06:44:33,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 06:44:33,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 06:44:33,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 06:44:33,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 06:44:33,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 06:44:33,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 06:44:33,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 06:44:33,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 06:44:33,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 06:44:33,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 06:44:33,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 06:44:33,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 06:44:33,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 06:44:33,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 06:44:33,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 06:44:33,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 06:44:33,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 06:44:33,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 06:44:33,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 06:44:33,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 06:44:33,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 06:44:33,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 06:44:33,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 06:44:33,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 06:44:33,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 06:44:33,887 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-06 06:44:33,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 06:44:33,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 06:44:33,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 06:44:33,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 06:44:33,917 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 06:44:33,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 06:44:33,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 06:44:33,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 06:44:33,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 06:44:33,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 06:44:33,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 06:44:33,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 06:44:33,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-06 06:44:33,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-06 06:44:34,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 06:44:34,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 06:44:34,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 06:44:34,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 06:44:34,183 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 06:44:34,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2022-12-06 06:44:35,110 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 06:44:35,324 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 06:44:35,324 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2022-12-06 06:44:35,336 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6e1df1a/1711200c9a3a49ee9df6d2bba76876ca/FLAG469ba1c1b [2022-12-06 06:44:35,347 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6e1df1a/1711200c9a3a49ee9df6d2bba76876ca [2022-12-06 06:44:35,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 06:44:35,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 06:44:35,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 06:44:35,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 06:44:35,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 06:44:35,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7460d05d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35, skipping insertion in model container [2022-12-06 06:44:35,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 06:44:35,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 06:44:35,501 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/safe029_tso.i[945,958] [2022-12-06 06:44:35,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 06:44:35,653 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 06:44:35,662 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/safe029_tso.i[945,958] [2022-12-06 06:44:35,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 06:44:35,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 06:44:35,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 06:44:35,735 INFO L208 MainTranslator]: Completed translation [2022-12-06 06:44:35,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35 WrapperNode [2022-12-06 06:44:35,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 06:44:35,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 06:44:35,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 06:44:35,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 06:44:35,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,782 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-06 06:44:35,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 06:44:35,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 06:44:35,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 06:44:35,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 06:44:35,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,806 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 06:44:35,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 06:44:35,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 06:44:35,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 06:44:35,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (1/1) ... [2022-12-06 06:44:35,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 06:44:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 06:44:35,844 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) [2022-12-06 06:44:35,859 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 [2022-12-06 06:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 06:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 06:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 06:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 06:44:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 06:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-06 06:44:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-06 06:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-06 06:44:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-06 06:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 06:44:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 06:44:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 06:44:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 06:44:35,881 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 06:44:35,995 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 06:44:35,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 06:44:36,113 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 06:44:36,118 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 06:44:36,118 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 06:44:36,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:44:36 BoogieIcfgContainer [2022-12-06 06:44:36,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 06:44:36,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 06:44:36,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 06:44:36,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 06:44:36,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:44:35" (1/3) ... [2022-12-06 06:44:36,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af2bcb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:44:36, skipping insertion in model container [2022-12-06 06:44:36,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:44:35" (2/3) ... [2022-12-06 06:44:36,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af2bcb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:44:36, skipping insertion in model container [2022-12-06 06:44:36,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:44:36" (3/3) ... [2022-12-06 06:44:36,130 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2022-12-06 06:44:36,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 06:44:36,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 06:44:36,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 06:44:36,177 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 06:44:36,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 66 transitions, 142 flow [2022-12-06 06:44:36,233 INFO L130 PetriNetUnfolder]: 2/64 cut-off events. [2022-12-06 06:44:36,233 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 06:44:36,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-06 06:44:36,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 66 transitions, 142 flow [2022-12-06 06:44:36,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 54 transitions, 114 flow [2022-12-06 06:44:36,240 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:44:36,263 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 54 transitions, 114 flow [2022-12-06 06:44:36,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 54 transitions, 114 flow [2022-12-06 06:44:36,286 INFO L130 PetriNetUnfolder]: 1/54 cut-off events. [2022-12-06 06:44:36,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 06:44:36,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2022-12-06 06:44:36,288 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 54 transitions, 114 flow [2022-12-06 06:44:36,288 INFO L188 LiptonReduction]: Number of co-enabled transitions 540 [2022-12-06 06:44:37,813 INFO L203 LiptonReduction]: Total number of compositions: 42 [2022-12-06 06:44:37,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 06:44:37,831 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=REPEATED_LIPTON_PN, 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;@7c9a544d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 06:44:37,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 06:44:37,835 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-06 06:44:37,835 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 06:44:37,835 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:44:37,836 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-06 06:44:37,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 06:44:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:44:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1770144975, now seen corresponding path program 1 times [2022-12-06 06:44:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:44:37,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080045297] [2022-12-06 06:44:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:44:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:44:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:44:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 06:44:38,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:44:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080045297] [2022-12-06 06:44:38,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080045297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:44:38,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:44:38,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-06 06:44:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343454002] [2022-12-06 06:44:38,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:44:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 06:44:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:44:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 06:44:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 06:44:38,153 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-06 06:44:38,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:44:38,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-06 06:44:38,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:44:38,206 INFO L130 PetriNetUnfolder]: 63/131 cut-off events. [2022-12-06 06:44:38,207 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 06:44:38,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 131 events. 63/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 450 event pairs, 33 based on Foata normal form. 13/144 useless extension candidates. Maximal degree in co-relation 266. Up to 85 conditions per place. [2022-12-06 06:44:38,208 INFO L137 encePairwiseOnDemand]: 6/13 looper letters, 16 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2022-12-06 06:44:38,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 93 flow [2022-12-06 06:44:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 06:44:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 06:44:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 24 transitions. [2022-12-06 06:44:38,217 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2022-12-06 06:44:38,219 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 24 transitions. [2022-12-06 06:44:38,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 93 flow [2022-12-06 06:44:38,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 21 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-06 06:44:38,223 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 66 flow [2022-12-06 06:44:38,224 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-12-06 06:44:38,226 INFO L294 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2022-12-06 06:44:38,226 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:44:38,227 INFO L89 Accepts]: Start accepts. Operand has 21 places, 16 transitions, 66 flow [2022-12-06 06:44:38,229 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:44:38,229 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:44:38,229 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 16 transitions, 66 flow [2022-12-06 06:44:38,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 16 transitions, 66 flow [2022-12-06 06:44:38,239 INFO L130 PetriNetUnfolder]: 11/46 cut-off events. [2022-12-06 06:44:38,239 INFO L131 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2022-12-06 06:44:38,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 46 events. 11/46 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs, 5 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 95. Up to 17 conditions per place. [2022-12-06 06:44:38,239 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 16 transitions, 66 flow [2022-12-06 06:44:38,240 INFO L188 LiptonReduction]: Number of co-enabled transitions 50 [2022-12-06 06:44:38,248 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:44:38,249 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 23 [2022-12-06 06:44:38,249 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 66 flow [2022-12-06 06:44:38,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,249 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:44:38,249 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:44:38,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 06:44:38,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 06:44:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:44:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash 960080575, now seen corresponding path program 1 times [2022-12-06 06:44:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:44:38,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613927261] [2022-12-06 06:44:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:44:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:44:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:44:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 06:44:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:44:38,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613927261] [2022-12-06 06:44:38,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613927261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:44:38,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:44:38,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-06 06:44:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004510489] [2022-12-06 06:44:38,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:44:38,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 06:44:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:44:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 06:44:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 06:44:38,402 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 12 [2022-12-06 06:44:38,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:44:38,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 12 [2022-12-06 06:44:38,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:44:38,435 INFO L130 PetriNetUnfolder]: 50/115 cut-off events. [2022-12-06 06:44:38,435 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-12-06 06:44:38,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 115 events. 50/115 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 383 event pairs, 14 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 321. Up to 89 conditions per place. [2022-12-06 06:44:38,436 INFO L137 encePairwiseOnDemand]: 8/12 looper letters, 16 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2022-12-06 06:44:38,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 132 flow [2022-12-06 06:44:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 06:44:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 06:44:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2022-12-06 06:44:38,437 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2022-12-06 06:44:38,437 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 66 flow. Second operand 3 states and 21 transitions. [2022-12-06 06:44:38,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 132 flow [2022-12-06 06:44:38,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-06 06:44:38,439 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 82 flow [2022-12-06 06:44:38,439 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2022-12-06 06:44:38,439 INFO L294 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2022-12-06 06:44:38,440 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:44:38,440 INFO L89 Accepts]: Start accepts. Operand has 22 places, 18 transitions, 82 flow [2022-12-06 06:44:38,440 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:44:38,440 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:44:38,440 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 18 transitions, 82 flow [2022-12-06 06:44:38,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 18 transitions, 82 flow [2022-12-06 06:44:38,444 INFO L130 PetriNetUnfolder]: 9/41 cut-off events. [2022-12-06 06:44:38,444 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2022-12-06 06:44:38,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 41 events. 9/41 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 118 event pairs, 1 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 83. Up to 16 conditions per place. [2022-12-06 06:44:38,445 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 18 transitions, 82 flow [2022-12-06 06:44:38,445 INFO L188 LiptonReduction]: Number of co-enabled transitions 54 [2022-12-06 06:44:38,446 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:44:38,447 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 7 [2022-12-06 06:44:38,447 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 82 flow [2022-12-06 06:44:38,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,447 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:44:38,447 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:44:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 06:44:38,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 06:44:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:44:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 960080265, now seen corresponding path program 1 times [2022-12-06 06:44:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:44:38,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44413239] [2022-12-06 06:44:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:44:38,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:44:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:44:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 06:44:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:44:38,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44413239] [2022-12-06 06:44:38,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44413239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:44:38,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:44:38,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 06:44:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645812456] [2022-12-06 06:44:38,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:44:38,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 06:44:38,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:44:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 06:44:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 06:44:38,567 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 12 [2022-12-06 06:44:38,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 82 flow. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:44:38,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 12 [2022-12-06 06:44:38,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:44:38,616 INFO L130 PetriNetUnfolder]: 57/119 cut-off events. [2022-12-06 06:44:38,617 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-06 06:44:38,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 119 events. 57/119 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 363 event pairs, 7 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 335. Up to 76 conditions per place. [2022-12-06 06:44:38,618 INFO L137 encePairwiseOnDemand]: 6/12 looper letters, 19 selfloop transitions, 9 changer transitions 0/28 dead transitions. [2022-12-06 06:44:38,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 166 flow [2022-12-06 06:44:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 06:44:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 06:44:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2022-12-06 06:44:38,619 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5625 [2022-12-06 06:44:38,619 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 82 flow. Second operand 4 states and 27 transitions. [2022-12-06 06:44:38,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 166 flow [2022-12-06 06:44:38,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-06 06:44:38,620 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 110 flow [2022-12-06 06:44:38,621 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2022-12-06 06:44:38,621 INFO L294 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2022-12-06 06:44:38,621 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:44:38,621 INFO L89 Accepts]: Start accepts. Operand has 25 places, 20 transitions, 110 flow [2022-12-06 06:44:38,622 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:44:38,622 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:44:38,622 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 20 transitions, 110 flow [2022-12-06 06:44:38,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 110 flow [2022-12-06 06:44:38,625 INFO L130 PetriNetUnfolder]: 7/36 cut-off events. [2022-12-06 06:44:38,625 INFO L131 PetriNetUnfolder]: For 15/18 co-relation queries the response was YES. [2022-12-06 06:44:38,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 36 events. 7/36 cut-off events. For 15/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 91 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 90. Up to 15 conditions per place. [2022-12-06 06:44:38,626 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 20 transitions, 110 flow [2022-12-06 06:44:38,626 INFO L188 LiptonReduction]: Number of co-enabled transitions 58 [2022-12-06 06:44:38,628 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:44:38,629 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-06 06:44:38,629 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 110 flow [2022-12-06 06:44:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,629 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:44:38,630 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:44:38,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 06:44:38,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 06:44:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:44:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash -302273605, now seen corresponding path program 1 times [2022-12-06 06:44:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:44:38,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557772785] [2022-12-06 06:44:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:44:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:44:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:44:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 06:44:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:44:38,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557772785] [2022-12-06 06:44:38,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557772785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:44:38,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:44:38,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 06:44:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926724219] [2022-12-06 06:44:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:44:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 06:44:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:44:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 06:44:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 06:44:38,701 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 12 [2022-12-06 06:44:38,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:44:38,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 12 [2022-12-06 06:44:38,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:44:38,742 INFO L130 PetriNetUnfolder]: 25/78 cut-off events. [2022-12-06 06:44:38,743 INFO L131 PetriNetUnfolder]: For 91/94 co-relation queries the response was YES. [2022-12-06 06:44:38,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 78 events. 25/78 cut-off events. For 91/94 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 284 event pairs, 3 based on Foata normal form. 8/85 useless extension candidates. Maximal degree in co-relation 228. Up to 32 conditions per place. [2022-12-06 06:44:38,743 INFO L137 encePairwiseOnDemand]: 7/12 looper letters, 15 selfloop transitions, 3 changer transitions 17/39 dead transitions. [2022-12-06 06:44:38,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 264 flow [2022-12-06 06:44:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 06:44:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 06:44:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2022-12-06 06:44:38,745 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2022-12-06 06:44:38,745 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 110 flow. Second operand 5 states and 37 transitions. [2022-12-06 06:44:38,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 264 flow [2022-12-06 06:44:38,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 256 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-06 06:44:38,746 INFO L231 Difference]: Finished difference. Result has 32 places, 18 transitions, 114 flow [2022-12-06 06:44:38,747 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=32, PETRI_TRANSITIONS=18} [2022-12-06 06:44:38,747 INFO L294 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2022-12-06 06:44:38,747 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-06 06:44:38,747 INFO L89 Accepts]: Start accepts. Operand has 32 places, 18 transitions, 114 flow [2022-12-06 06:44:38,748 INFO L95 Accepts]: Finished accepts. [2022-12-06 06:44:38,748 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:44:38,748 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 18 transitions, 114 flow [2022-12-06 06:44:38,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions, 114 flow [2022-12-06 06:44:38,752 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2022-12-06 06:44:38,753 INFO L131 PetriNetUnfolder]: For 31/33 co-relation queries the response was YES. [2022-12-06 06:44:38,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 29 events. 5/29 cut-off events. For 31/33 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 14 conditions per place. [2022-12-06 06:44:38,753 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 18 transitions, 114 flow [2022-12-06 06:44:38,754 INFO L188 LiptonReduction]: Number of co-enabled transitions 28 [2022-12-06 06:44:38,816 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-06 06:44:38,817 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 70 [2022-12-06 06:44:38,817 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 17 transitions, 112 flow [2022-12-06 06:44:38,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,817 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 06:44:38,817 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 06:44:38,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 06:44:38,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 06:44:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 06:44:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash -556102833, now seen corresponding path program 1 times [2022-12-06 06:44:38,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 06:44:38,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955097878] [2022-12-06 06:44:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 06:44:38,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 06:44:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 06:44:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 06:44:38,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 06:44:38,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955097878] [2022-12-06 06:44:38,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955097878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 06:44:38,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 06:44:38,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 06:44:38,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271668172] [2022-12-06 06:44:38,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 06:44:38,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 06:44:38,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 06:44:38,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 06:44:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-06 06:44:38,904 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 11 [2022-12-06 06:44:38,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 17 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 06:44:38,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 11 [2022-12-06 06:44:38,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 06:44:38,920 INFO L130 PetriNetUnfolder]: 8/29 cut-off events. [2022-12-06 06:44:38,920 INFO L131 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2022-12-06 06:44:38,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 29 events. 8/29 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 2 based on Foata normal form. 5/33 useless extension candidates. Maximal degree in co-relation 114. Up to 12 conditions per place. [2022-12-06 06:44:38,921 INFO L137 encePairwiseOnDemand]: 7/11 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2022-12-06 06:44:38,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 148 flow [2022-12-06 06:44:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 06:44:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 06:44:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-12-06 06:44:38,922 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2022-12-06 06:44:38,922 INFO L175 Difference]: Start difference. First operand has 29 places, 17 transitions, 112 flow. Second operand 4 states and 23 transitions. [2022-12-06 06:44:38,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 148 flow [2022-12-06 06:44:38,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 127 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-06 06:44:38,923 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2022-12-06 06:44:38,923 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=11, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2022-12-06 06:44:38,924 INFO L294 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2022-12-06 06:44:38,924 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-06 06:44:38,924 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 0 transitions, 0 flow [2022-12-06 06:44:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-06 06:44:38,925 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-06 06:44:38,925 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 06:44:38,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-06 06:44:38,925 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-06 06:44:38,925 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-06 06:44:38,925 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-06 06:44:38,926 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-06 06:44:38,926 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-06 06:44:38,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 06:44:38,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 06:44:38,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 06:44:38,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 06:44:38,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 06:44:38,929 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-06 06:44:38,931 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 06:44:38,931 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 06:44:38,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:44:38 BasicIcfg [2022-12-06 06:44:38,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 06:44:38,934 INFO L158 Benchmark]: Toolchain (without parser) took 3584.85ms. Allocated memory was 195.0MB in the beginning and 243.3MB in the end (delta: 48.2MB). Free memory was 170.7MB in the beginning and 111.3MB in the end (delta: 59.4MB). Peak memory consumption was 108.5MB. Max. memory is 8.0GB. [2022-12-06 06:44:38,934 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory was 171.7MB in the beginning and 171.6MB in the end (delta: 103.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 06:44:38,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.20ms. Allocated memory is still 195.0MB. Free memory was 170.7MB in the beginning and 148.6MB in the end (delta: 22.2MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-06 06:44:38,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.82ms. Allocated memory is still 195.0MB. Free memory was 148.6MB in the beginning and 146.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 06:44:38,935 INFO L158 Benchmark]: Boogie Preprocessor took 29.42ms. Allocated memory is still 195.0MB. Free memory was 146.9MB in the beginning and 145.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 06:44:38,935 INFO L158 Benchmark]: RCFGBuilder took 307.19ms. Allocated memory is still 195.0MB. Free memory was 145.4MB in the beginning and 132.3MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 06:44:38,936 INFO L158 Benchmark]: TraceAbstraction took 2808.47ms. Allocated memory was 195.0MB in the beginning and 243.3MB in the end (delta: 48.2MB). Free memory was 131.8MB in the beginning and 111.3MB in the end (delta: 20.4MB). Peak memory consumption was 69.7MB. Max. memory is 8.0GB. [2022-12-06 06:44:38,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory was 171.7MB in the beginning and 171.6MB in the end (delta: 103.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 383.20ms. Allocated memory is still 195.0MB. Free memory was 170.7MB in the beginning and 148.6MB in the end (delta: 22.2MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.82ms. Allocated memory is still 195.0MB. Free memory was 148.6MB in the beginning and 146.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.42ms. Allocated memory is still 195.0MB. Free memory was 146.9MB in the beginning and 145.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 307.19ms. Allocated memory is still 195.0MB. Free memory was 145.4MB in the beginning and 132.3MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2808.47ms. Allocated memory was 195.0MB in the beginning and 243.3MB in the end (delta: 48.2MB). Free memory was 131.8MB in the beginning and 111.3MB in the end (delta: 20.4MB). Peak memory consumption was 69.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 60 PlacesBefore, 19 PlacesAfterwards, 54 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 24 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 393, independent: 365, independent conditional: 365, independent unconditional: 0, dependent: 28, dependent conditional: 28, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 393, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 393, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 393, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 338, independent: 315, independent conditional: 0, independent unconditional: 315, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 338, independent: 312, independent conditional: 0, independent unconditional: 312, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 52, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 393, independent: 50, independent conditional: 0, independent unconditional: 50, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 338, unknown conditional: 0, unknown unconditional: 338] , Statistics on independence cache: Total cache size (in pairs): 532, Positive cache size: 509, Positive conditional cache size: 0, Positive unconditional cache size: 509, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 21 PlacesBefore, 21 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 19, independent: 15, independent conditional: 4, independent unconditional: 11, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 19, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 19, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 19, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 4, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 22 PlacesBefore, 22 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, independent: 19, independent conditional: 19, independent unconditional: 0, dependent: 5, dependent conditional: 5, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 24, independent: 19, independent conditional: 2, independent unconditional: 17, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 24, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 24, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 2, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 25 PlacesBefore, 25 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 27, independent: 22, independent conditional: 22, independent unconditional: 0, dependent: 5, dependent conditional: 5, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 27, independent: 22, independent conditional: 5, independent unconditional: 17, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 27, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 27, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 27, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 5, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 30 PlacesBefore, 29 PlacesAfterwards, 18 TransitionsBefore, 17 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 4, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 2, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 2, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, 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 5 procedures, 81 locations, 3 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: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 8 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2022-12-06 06:44:38,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...