/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 23:27:53,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 23:27:53,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 23:27:53,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 23:27:53,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 23:27:53,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 23:27:53,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 23:27:53,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 23:27:53,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 23:27:53,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 23:27:53,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 23:27:53,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 23:27:53,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 23:27:53,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 23:27:53,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 23:27:53,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 23:27:53,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 23:27:53,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 23:27:53,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 23:27:53,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 23:27:53,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 23:27:53,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 23:27:53,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 23:27:53,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 23:27:53,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 23:27:53,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 23:27:53,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 23:27:53,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 23:27:53,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 23:27:53,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 23:27:53,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 23:27:53,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 23:27:53,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 23:27:53,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 23:27:53,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 23:27:53,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 23:27:53,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 23:27:53,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 23:27:53,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 23:27:53,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 23:27:53,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 23:27:53,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 23:27:53,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 23:27:53,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 23:27:53,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 23:27:53,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 23:27:53,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 23:27:53,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 23:27:53,975 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 23:27:53,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 23:27:53,976 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 23:27:53,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 23:27:53,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 23:27:53,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 23:27:53,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 23:27:53,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 23:27:53,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 23:27:53,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 23:27:53,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 23:27:53,978 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 23:27:53,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 23:27:53,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 23:27:53,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 23:27:53,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 23:27:53,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 23:27:53,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:27:53,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 23:27:53,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 23:27:53,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 23:27:53,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 23:27:53,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 23:27:53,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 23:27:53,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 23:27:54,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 23:27:54,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 23:27:54,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 23:27:54,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 23:27:54,274 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 23:27:54,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2022-12-12 23:27:55,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 23:27:55,704 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 23:27:55,704 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2022-12-12 23:27:55,710 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1beb2938/3c449b8fa37440a2b8804c1e44530e0e/FLAG5527613ae [2022-12-12 23:27:55,720 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1beb2938/3c449b8fa37440a2b8804c1e44530e0e [2022-12-12 23:27:55,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 23:27:55,724 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 23:27:55,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 23:27:55,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 23:27:55,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 23:27:55,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:27:55" (1/1) ... [2022-12-12 23:27:55,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5167a1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:55, skipping insertion in model container [2022-12-12 23:27:55,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:27:55" (1/1) ... [2022-12-12 23:27:55,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 23:27:55,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 23:27:55,915 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-12-12 23:27:55,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:27:55,942 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 23:27:55,985 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-12-12 23:27:55,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:27:56,002 INFO L208 MainTranslator]: Completed translation [2022-12-12 23:27:56,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56 WrapperNode [2022-12-12 23:27:56,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 23:27:56,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 23:27:56,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 23:27:56,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 23:27:56,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,058 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2022-12-12 23:27:56,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 23:27:56,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 23:27:56,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 23:27:56,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 23:27:56,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 23:27:56,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 23:27:56,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 23:27:56,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 23:27:56,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (1/1) ... [2022-12-12 23:27:56,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:27:56,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:27:56,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 23:27:56,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 23:27:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 23:27:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 23:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 23:27:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 23:27:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 23:27:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 23:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 23:27:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 23:27:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 23:27:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 23:27:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 23:27:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 23:27:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 23:27:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 23:27:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 23:27:56,187 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 23:27:56,321 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 23:27:56,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 23:27:56,646 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 23:27:56,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 23:27:56,655 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-12 23:27:56,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:27:56 BoogieIcfgContainer [2022-12-12 23:27:56,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 23:27:56,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 23:27:56,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 23:27:56,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 23:27:56,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:27:55" (1/3) ... [2022-12-12 23:27:56,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a11083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:27:56, skipping insertion in model container [2022-12-12 23:27:56,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:27:56" (2/3) ... [2022-12-12 23:27:56,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a11083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:27:56, skipping insertion in model container [2022-12-12 23:27:56,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:27:56" (3/3) ... [2022-12-12 23:27:56,678 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2022-12-12 23:27:56,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 23:27:56,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 23:27:56,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 23:27:56,781 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 23:27:56,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 172 transitions, 368 flow [2022-12-12 23:27:56,891 INFO L130 PetriNetUnfolder]: 15/169 cut-off events. [2022-12-12 23:27:56,891 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:27:56,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 169 events. 15/169 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-12-12 23:27:56,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 172 transitions, 368 flow [2022-12-12 23:27:56,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 159 transitions, 336 flow [2022-12-12 23:27:56,910 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 23:27:56,926 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 159 transitions, 336 flow [2022-12-12 23:27:56,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 159 transitions, 336 flow [2022-12-12 23:27:56,973 INFO L130 PetriNetUnfolder]: 15/159 cut-off events. [2022-12-12 23:27:56,974 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:27:56,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 159 events. 15/159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-12-12 23:27:56,979 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 159 transitions, 336 flow [2022-12-12 23:27:56,979 INFO L226 LiptonReduction]: Number of co-enabled transitions 3534 [2022-12-12 23:28:02,711 INFO L241 LiptonReduction]: Total number of compositions: 131 [2022-12-12 23:28:02,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 23:28:02,730 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@fcb3c31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 23:28:02,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 23:28:02,737 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2022-12-12 23:28:02,737 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:28:02,737 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:02,737 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:02,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash 514205932, now seen corresponding path program 1 times [2022-12-12 23:28:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:02,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506515781] [2022-12-12 23:28:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:03,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506515781] [2022-12-12 23:28:03,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506515781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:28:03,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:28:03,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:28:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59611029] [2022-12-12 23:28:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:03,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:28:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:28:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:28:03,279 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-12 23:28:03,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:03,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:03,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-12 23:28:03,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:03,443 INFO L130 PetriNetUnfolder]: 562/733 cut-off events. [2022-12-12 23:28:03,444 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-12-12 23:28:03,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 733 events. 562/733 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2287 event pairs, 245 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 1283. Up to 728 conditions per place. [2022-12-12 23:28:03,453 INFO L137 encePairwiseOnDemand]: 25/28 looper letters, 25 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2022-12-12 23:28:03,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 130 flow [2022-12-12 23:28:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:28:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:28:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2022-12-12 23:28:03,466 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2022-12-12 23:28:03,471 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2022-12-12 23:28:03,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 130 flow [2022-12-12 23:28:03,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 130 flow [2022-12-12 23:28:03,478 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 130 flow [2022-12-12 23:28:03,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:03,479 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:03,479 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:03,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 23:28:03,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:03,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:03,482 INFO L85 PathProgramCache]: Analyzing trace with hash 436651561, now seen corresponding path program 1 times [2022-12-12 23:28:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:03,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032298146] [2022-12-12 23:28:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:03,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:03,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:03,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032298146] [2022-12-12 23:28:03,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032298146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:28:03,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:28:03,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 23:28:03,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897052104] [2022-12-12 23:28:03,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:03,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:28:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:28:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:28:03,871 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2022-12-12 23:28:03,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:03,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:03,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2022-12-12 23:28:03,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:03,997 INFO L130 PetriNetUnfolder]: 772/1044 cut-off events. [2022-12-12 23:28:03,997 INFO L131 PetriNetUnfolder]: For 148/158 co-relation queries the response was YES. [2022-12-12 23:28:03,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3155 conditions, 1044 events. 772/1044 cut-off events. For 148/158 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3878 event pairs, 154 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 2608. Up to 1040 conditions per place. [2022-12-12 23:28:04,004 INFO L137 encePairwiseOnDemand]: 21/28 looper letters, 39 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2022-12-12 23:28:04,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 305 flow [2022-12-12 23:28:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:28:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:28:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-12-12 23:28:04,007 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2022-12-12 23:28:04,007 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2022-12-12 23:28:04,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 47 transitions, 305 flow [2022-12-12 23:28:04,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 46 transitions, 296 flow [2022-12-12 23:28:04,014 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 46 transitions, 296 flow [2022-12-12 23:28:04,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:04,014 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:04,014 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:04,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 23:28:04,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:04,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1364839079, now seen corresponding path program 1 times [2022-12-12 23:28:04,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:04,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693658380] [2022-12-12 23:28:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:04,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:04,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693658380] [2022-12-12 23:28:04,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693658380] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:04,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360559351] [2022-12-12 23:28:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:04,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:04,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:04,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:04,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 23:28:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:04,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 23:28:04,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:04,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:04,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360559351] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:28:04,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:28:04,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 23:28:04,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048951053] [2022-12-12 23:28:04,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:28:04,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 23:28:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:04,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 23:28:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-12 23:28:04,888 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-12 23:28:04,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 46 transitions, 296 flow. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:04,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:04,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-12 23:28:04,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:05,329 INFO L130 PetriNetUnfolder]: 1451/1988 cut-off events. [2022-12-12 23:28:05,329 INFO L131 PetriNetUnfolder]: For 419/439 co-relation queries the response was YES. [2022-12-12 23:28:05,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7983 conditions, 1988 events. 1451/1988 cut-off events. For 419/439 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8553 event pairs, 157 based on Foata normal form. 0/1283 useless extension candidates. Maximal degree in co-relation 3472. Up to 1980 conditions per place. [2022-12-12 23:28:05,342 INFO L137 encePairwiseOnDemand]: 22/28 looper letters, 119 selfloop transitions, 7 changer transitions 6/134 dead transitions. [2022-12-12 23:28:05,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 134 transitions, 1140 flow [2022-12-12 23:28:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:28:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:28:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2022-12-12 23:28:05,344 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2022-12-12 23:28:05,345 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2022-12-12 23:28:05,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 134 transitions, 1140 flow [2022-12-12 23:28:05,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 128 transitions, 1083 flow [2022-12-12 23:28:05,357 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 128 transitions, 1083 flow [2022-12-12 23:28:05,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:05,358 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:05,358 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:05,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:05,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:05,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:05,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash -123977440, now seen corresponding path program 2 times [2022-12-12 23:28:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:05,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276535420] [2022-12-12 23:28:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276535420] [2022-12-12 23:28:05,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276535420] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847472702] [2022-12-12 23:28:05,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 23:28:05,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:05,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:05,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 23:28:05,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:28:05,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:28:05,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 23:28:05,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:05,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:05,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847472702] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:05,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:28:05,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-12-12 23:28:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336741165] [2022-12-12 23:28:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:05,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:28:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:28:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-12 23:28:05,933 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-12 23:28:05,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 128 transitions, 1083 flow. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:05,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:05,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-12 23:28:05,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:06,247 INFO L130 PetriNetUnfolder]: 1470/2026 cut-off events. [2022-12-12 23:28:06,248 INFO L131 PetriNetUnfolder]: For 1468/1506 co-relation queries the response was YES. [2022-12-12 23:28:06,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 2026 events. 1470/2026 cut-off events. For 1468/1506 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8750 event pairs, 119 based on Foata normal form. 8/1391 useless extension candidates. Maximal degree in co-relation 4970. Up to 1938 conditions per place. [2022-12-12 23:28:06,267 INFO L137 encePairwiseOnDemand]: 21/28 looper letters, 160 selfloop transitions, 20 changer transitions 0/183 dead transitions. [2022-12-12 23:28:06,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 183 transitions, 1892 flow [2022-12-12 23:28:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:28:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:28:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2022-12-12 23:28:06,271 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2022-12-12 23:28:06,273 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2022-12-12 23:28:06,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 183 transitions, 1892 flow [2022-12-12 23:28:06,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 183 transitions, 1892 flow [2022-12-12 23:28:06,291 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 183 transitions, 1892 flow [2022-12-12 23:28:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:06,292 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:06,292 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:06,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 23:28:06,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-12 23:28:06,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1832299566, now seen corresponding path program 1 times [2022-12-12 23:28:06,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:06,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638783295] [2022-12-12 23:28:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:06,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:06,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638783295] [2022-12-12 23:28:06,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638783295] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133208589] [2022-12-12 23:28:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:06,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:06,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:06,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 23:28:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:06,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 23:28:06,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:06,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:06,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133208589] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:28:06,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:28:06,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-12 23:28:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547678025] [2022-12-12 23:28:06,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:28:06,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 23:28:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:06,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 23:28:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-12 23:28:06,994 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 23:28:06,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 183 transitions, 1892 flow. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:06,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:06,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 23:28:06,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:07,451 INFO L130 PetriNetUnfolder]: 1129/1649 cut-off events. [2022-12-12 23:28:07,452 INFO L131 PetriNetUnfolder]: For 3222/3222 co-relation queries the response was YES. [2022-12-12 23:28:07,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9095 conditions, 1649 events. 1129/1649 cut-off events. For 3222/3222 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6792 event pairs, 99 based on Foata normal form. 0/1281 useless extension candidates. Maximal degree in co-relation 5510. Up to 1460 conditions per place. [2022-12-12 23:28:07,464 INFO L137 encePairwiseOnDemand]: 21/28 looper letters, 225 selfloop transitions, 13 changer transitions 12/252 dead transitions. [2022-12-12 23:28:07,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 252 transitions, 3108 flow [2022-12-12 23:28:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:28:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:28:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2022-12-12 23:28:07,466 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2022-12-12 23:28:07,468 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2022-12-12 23:28:07,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 252 transitions, 3108 flow [2022-12-12 23:28:07,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 240 transitions, 2952 flow [2022-12-12 23:28:07,482 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 240 transitions, 2952 flow [2022-12-12 23:28:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:07,482 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:07,482 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:07,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:07,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:07,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1821302857, now seen corresponding path program 1 times [2022-12-12 23:28:07,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:07,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042683427] [2022-12-12 23:28:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:07,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:07,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042683427] [2022-12-12 23:28:07,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042683427] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:07,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731049775] [2022-12-12 23:28:07,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:07,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:07,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:07,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:07,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 23:28:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:07,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-12 23:28:07,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:07,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:07,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731049775] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:28:07,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:28:07,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 23:28:07,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139165071] [2022-12-12 23:28:07,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:28:07,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 23:28:07,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:07,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 23:28:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-12 23:28:07,991 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 28 [2022-12-12 23:28:07,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 240 transitions, 2952 flow. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:07,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:07,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 28 [2022-12-12 23:28:07,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:08,250 INFO L130 PetriNetUnfolder]: 819/1163 cut-off events. [2022-12-12 23:28:08,250 INFO L131 PetriNetUnfolder]: For 2040/2148 co-relation queries the response was YES. [2022-12-12 23:28:08,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 1163 events. 819/1163 cut-off events. For 2040/2148 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4088 event pairs, 90 based on Foata normal form. 48/919 useless extension candidates. Maximal degree in co-relation 6454. Up to 1035 conditions per place. [2022-12-12 23:28:08,259 INFO L137 encePairwiseOnDemand]: 22/28 looper letters, 152 selfloop transitions, 7 changer transitions 34/196 dead transitions. [2022-12-12 23:28:08,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 196 transitions, 2774 flow [2022-12-12 23:28:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:28:08,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:28:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2022-12-12 23:28:08,261 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3622448979591837 [2022-12-12 23:28:08,263 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2022-12-12 23:28:08,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 196 transitions, 2774 flow [2022-12-12 23:28:08,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 162 transitions, 2307 flow [2022-12-12 23:28:08,272 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 162 transitions, 2307 flow [2022-12-12 23:28:08,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:08,272 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:08,272 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:08,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:08,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1049551846, now seen corresponding path program 2 times [2022-12-12 23:28:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:08,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801411116] [2022-12-12 23:28:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:08,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801411116] [2022-12-12 23:28:08,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801411116] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:08,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523698311] [2022-12-12 23:28:08,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 23:28:08,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:08,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:08,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 23:28:08,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:28:08,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:28:08,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 23:28:08,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:08,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:08,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523698311] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:08,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:28:08,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2022-12-12 23:28:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549247240] [2022-12-12 23:28:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:08,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 23:28:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:08,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 23:28:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-12-12 23:28:08,993 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 23:28:08,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 162 transitions, 2307 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:08,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:08,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 23:28:08,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:09,401 INFO L130 PetriNetUnfolder]: 1541/2126 cut-off events. [2022-12-12 23:28:09,401 INFO L131 PetriNetUnfolder]: For 3738/3824 co-relation queries the response was YES. [2022-12-12 23:28:09,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16165 conditions, 2126 events. 1541/2126 cut-off events. For 3738/3824 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8107 event pairs, 21 based on Foata normal form. 4/1487 useless extension candidates. Maximal degree in co-relation 15524. Up to 1999 conditions per place. [2022-12-12 23:28:09,417 INFO L137 encePairwiseOnDemand]: 17/28 looper letters, 387 selfloop transitions, 95 changer transitions 0/483 dead transitions. [2022-12-12 23:28:09,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 483 transitions, 7852 flow [2022-12-12 23:28:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:28:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:28:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2022-12-12 23:28:09,421 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2022-12-12 23:28:09,422 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2022-12-12 23:28:09,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 483 transitions, 7852 flow [2022-12-12 23:28:09,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 483 transitions, 7852 flow [2022-12-12 23:28:09,440 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 483 transitions, 7852 flow [2022-12-12 23:28:09,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:09,440 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:09,441 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:09,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:09,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:09,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1547019680, now seen corresponding path program 3 times [2022-12-12 23:28:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:09,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58304666] [2022-12-12 23:28:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:09,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:09,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58304666] [2022-12-12 23:28:09,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58304666] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:09,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262498524] [2022-12-12 23:28:09,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 23:28:09,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:09,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:09,800 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:09,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 23:28:09,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 23:28:09,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:28:09,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 23:28:09,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:10,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:10,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262498524] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:10,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:28:10,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2022-12-12 23:28:10,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743683387] [2022-12-12 23:28:10,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:10,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 23:28:10,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 23:28:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-12-12 23:28:10,171 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 23:28:10,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 483 transitions, 7852 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:10,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:10,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 23:28:10,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:10,706 INFO L130 PetriNetUnfolder]: 2064/2846 cut-off events. [2022-12-12 23:28:10,706 INFO L131 PetriNetUnfolder]: For 6685/6787 co-relation queries the response was YES. [2022-12-12 23:28:10,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24544 conditions, 2846 events. 2064/2846 cut-off events. For 6685/6787 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11432 event pairs, 0 based on Foata normal form. 4/1961 useless extension candidates. Maximal degree in co-relation 23658. Up to 2679 conditions per place. [2022-12-12 23:28:10,730 INFO L137 encePairwiseOnDemand]: 17/28 looper letters, 627 selfloop transitions, 141 changer transitions 0/769 dead transitions. [2022-12-12 23:28:10,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 769 transitions, 14014 flow [2022-12-12 23:28:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:28:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:28:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2022-12-12 23:28:10,732 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2022-12-12 23:28:10,733 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2022-12-12 23:28:10,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 769 transitions, 14014 flow [2022-12-12 23:28:10,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 769 transitions, 14014 flow [2022-12-12 23:28:10,792 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 769 transitions, 14014 flow [2022-12-12 23:28:10,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:10,792 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:10,792 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:10,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:11,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:11,002 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash -222265938, now seen corresponding path program 4 times [2022-12-12 23:28:11,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715534717] [2022-12-12 23:28:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:11,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:11,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715534717] [2022-12-12 23:28:11,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715534717] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:11,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382097942] [2022-12-12 23:28:11,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 23:28:11,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:11,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:11,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:11,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 23:28:11,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 23:28:11,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:28:11,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 23:28:11,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:11,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:11,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382097942] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:11,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:28:11,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2022-12-12 23:28:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370032156] [2022-12-12 23:28:11,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:11,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 23:28:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 23:28:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-12-12 23:28:11,432 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 23:28:11,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 769 transitions, 14014 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:11,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:11,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 23:28:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:12,117 INFO L130 PetriNetUnfolder]: 2069/2833 cut-off events. [2022-12-12 23:28:12,117 INFO L131 PetriNetUnfolder]: For 8552/8690 co-relation queries the response was YES. [2022-12-12 23:28:12,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27208 conditions, 2833 events. 2069/2833 cut-off events. For 8552/8690 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11229 event pairs, 2 based on Foata normal form. 8/1954 useless extension candidates. Maximal degree in co-relation 26269. Up to 2674 conditions per place. [2022-12-12 23:28:12,139 INFO L137 encePairwiseOnDemand]: 18/28 looper letters, 714 selfloop transitions, 145 changer transitions 0/860 dead transitions. [2022-12-12 23:28:12,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 860 transitions, 17370 flow [2022-12-12 23:28:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:28:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:28:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2022-12-12 23:28:12,141 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2022-12-12 23:28:12,141 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 45 predicate places. [2022-12-12 23:28:12,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 860 transitions, 17370 flow [2022-12-12 23:28:12,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 860 transitions, 17370 flow [2022-12-12 23:28:12,166 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 860 transitions, 17370 flow [2022-12-12 23:28:12,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:12,166 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:12,166 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:12,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:12,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:12,372 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1211953506, now seen corresponding path program 5 times [2022-12-12 23:28:12,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:12,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223367496] [2022-12-12 23:28:12,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:12,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:12,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:12,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223367496] [2022-12-12 23:28:12,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223367496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:12,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630986938] [2022-12-12 23:28:12,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 23:28:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:12,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:12,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:12,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 23:28:12,617 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:28:12,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:28:12,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 23:28:12,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:28:12,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:28:12,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630986938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:28:12,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:28:12,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-12 23:28:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708954214] [2022-12-12 23:28:12,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:28:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 23:28:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 23:28:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-12-12 23:28:12,740 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 23:28:12,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 860 transitions, 17370 flow. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:12,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:12,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 23:28:12,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:13,605 INFO L130 PetriNetUnfolder]: 2000/2752 cut-off events. [2022-12-12 23:28:13,606 INFO L131 PetriNetUnfolder]: For 8145/8145 co-relation queries the response was YES. [2022-12-12 23:28:13,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28889 conditions, 2752 events. 2000/2752 cut-off events. For 8145/8145 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10680 event pairs, 0 based on Foata normal form. 0/1923 useless extension candidates. Maximal degree in co-relation 27925. Up to 2560 conditions per place. [2022-12-12 23:28:13,628 INFO L137 encePairwiseOnDemand]: 18/28 looper letters, 832 selfloop transitions, 103 changer transitions 0/935 dead transitions. [2022-12-12 23:28:13,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 935 transitions, 20630 flow [2022-12-12 23:28:13,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 23:28:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 23:28:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2022-12-12 23:28:13,630 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2022-12-12 23:28:13,631 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2022-12-12 23:28:13,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 935 transitions, 20630 flow [2022-12-12 23:28:13,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 935 transitions, 20630 flow [2022-12-12 23:28:13,658 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 935 transitions, 20630 flow [2022-12-12 23:28:13,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:13,658 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:13,658 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:13,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-12 23:28:13,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 23:28:13,865 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1175689182, now seen corresponding path program 6 times [2022-12-12 23:28:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:13,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100508218] [2022-12-12 23:28:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:14,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:14,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100508218] [2022-12-12 23:28:14,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100508218] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:14,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132488603] [2022-12-12 23:28:14,009 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 23:28:14,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:14,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:14,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:14,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 23:28:14,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 23:28:14,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:28:14,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 23:28:14,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:14,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:14,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132488603] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:14,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:28:14,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2022-12-12 23:28:14,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416002192] [2022-12-12 23:28:14,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:14,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 23:28:14,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 23:28:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-12 23:28:14,293 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 23:28:14,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 935 transitions, 20630 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:14,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:14,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 23:28:14,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:14,949 INFO L130 PetriNetUnfolder]: 2030/2796 cut-off events. [2022-12-12 23:28:14,950 INFO L131 PetriNetUnfolder]: For 9415/9415 co-relation queries the response was YES. [2022-12-12 23:28:14,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32041 conditions, 2796 events. 2030/2796 cut-off events. For 9415/9415 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10939 event pairs, 0 based on Foata normal form. 0/1955 useless extension candidates. Maximal degree in co-relation 30992. Up to 2602 conditions per place. [2022-12-12 23:28:15,001 INFO L137 encePairwiseOnDemand]: 18/28 looper letters, 734 selfloop transitions, 233 changer transitions 0/971 dead transitions. [2022-12-12 23:28:15,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 971 transitions, 23342 flow [2022-12-12 23:28:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 23:28:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 23:28:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2022-12-12 23:28:15,008 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2022-12-12 23:28:15,009 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2022-12-12 23:28:15,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 971 transitions, 23342 flow [2022-12-12 23:28:15,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 971 transitions, 23342 flow [2022-12-12 23:28:15,039 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 971 transitions, 23342 flow [2022-12-12 23:28:15,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:15,040 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:15,040 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:15,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:15,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:15,246 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:15,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1151308696, now seen corresponding path program 7 times [2022-12-12 23:28:15,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:15,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808502142] [2022-12-12 23:28:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:15,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:15,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:15,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808502142] [2022-12-12 23:28:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808502142] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126577362] [2022-12-12 23:28:15,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 23:28:15,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:15,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:15,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:15,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 23:28:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:15,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 23:28:15,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:15,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:28:15,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126577362] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:15,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 23:28:15,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2022-12-12 23:28:15,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944362243] [2022-12-12 23:28:15,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:15,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 23:28:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 23:28:15,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-12-12 23:28:15,679 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 23:28:15,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 971 transitions, 23342 flow. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:15,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:15,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 23:28:15,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:16,319 INFO L130 PetriNetUnfolder]: 2008/2756 cut-off events. [2022-12-12 23:28:16,320 INFO L131 PetriNetUnfolder]: For 10848/10848 co-relation queries the response was YES. [2022-12-12 23:28:16,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34217 conditions, 2756 events. 2008/2756 cut-off events. For 10848/10848 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10644 event pairs, 0 based on Foata normal form. 0/1933 useless extension candidates. Maximal degree in co-relation 33137. Up to 2564 conditions per place. [2022-12-12 23:28:16,342 INFO L137 encePairwiseOnDemand]: 18/28 looper letters, 737 selfloop transitions, 208 changer transitions 0/949 dead transitions. [2022-12-12 23:28:16,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 949 transitions, 24695 flow [2022-12-12 23:28:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:28:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:28:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2022-12-12 23:28:16,344 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2022-12-12 23:28:16,344 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2022-12-12 23:28:16,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 949 transitions, 24695 flow [2022-12-12 23:28:16,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 949 transitions, 24695 flow [2022-12-12 23:28:16,373 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 949 transitions, 24695 flow [2022-12-12 23:28:16,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:16,373 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:16,374 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:16,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 23:28:16,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-12 23:28:16,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash -733350502, now seen corresponding path program 1 times [2022-12-12 23:28:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:16,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168454133] [2022-12-12 23:28:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:28:16,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:16,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168454133] [2022-12-12 23:28:16,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168454133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:28:16,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:28:16,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 23:28:16,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481337680] [2022-12-12 23:28:16,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:16,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:28:16,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:16,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:28:16,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:28:16,656 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2022-12-12 23:28:16,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 949 transitions, 24695 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:16,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:16,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2022-12-12 23:28:16,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:17,268 INFO L130 PetriNetUnfolder]: 2120/2934 cut-off events. [2022-12-12 23:28:17,268 INFO L131 PetriNetUnfolder]: For 14532/14532 co-relation queries the response was YES. [2022-12-12 23:28:17,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39102 conditions, 2934 events. 2120/2934 cut-off events. For 14532/14532 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11785 event pairs, 2 based on Foata normal form. 0/2119 useless extension candidates. Maximal degree in co-relation 37945. Up to 2738 conditions per place. [2022-12-12 23:28:17,290 INFO L137 encePairwiseOnDemand]: 25/28 looper letters, 963 selfloop transitions, 44 changer transitions 0/1033 dead transitions. [2022-12-12 23:28:17,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 1033 transitions, 28902 flow [2022-12-12 23:28:17,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:28:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:28:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-12-12 23:28:17,296 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2022-12-12 23:28:17,296 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2022-12-12 23:28:17,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 1033 transitions, 28902 flow [2022-12-12 23:28:17,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 1033 transitions, 28902 flow [2022-12-12 23:28:17,328 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 1033 transitions, 28902 flow [2022-12-12 23:28:17,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:17,329 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:17,329 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:17,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 23:28:17,329 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:17,330 INFO L85 PathProgramCache]: Analyzing trace with hash 596924972, now seen corresponding path program 1 times [2022-12-12 23:28:17,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:17,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643526832] [2022-12-12 23:28:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:17,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:28:17,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:17,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643526832] [2022-12-12 23:28:17,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643526832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:28:17,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:28:17,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 23:28:17,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234626553] [2022-12-12 23:28:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:28:17,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:28:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:28:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:28:17,395 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2022-12-12 23:28:17,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 1033 transitions, 28902 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:17,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:17,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2022-12-12 23:28:17,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:18,036 INFO L130 PetriNetUnfolder]: 2038/2852 cut-off events. [2022-12-12 23:28:18,036 INFO L131 PetriNetUnfolder]: For 18565/18565 co-relation queries the response was YES. [2022-12-12 23:28:18,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40481 conditions, 2852 events. 2038/2852 cut-off events. For 18565/18565 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11521 event pairs, 0 based on Foata normal form. 0/2119 useless extension candidates. Maximal degree in co-relation 39247. Up to 2656 conditions per place. [2022-12-12 23:28:18,056 INFO L137 encePairwiseOnDemand]: 25/28 looper letters, 1003 selfloop transitions, 45 changer transitions 0/1074 dead transitions. [2022-12-12 23:28:18,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 1074 transitions, 32167 flow [2022-12-12 23:28:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:28:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:28:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2022-12-12 23:28:18,057 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2022-12-12 23:28:18,057 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2022-12-12 23:28:18,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 1074 transitions, 32167 flow [2022-12-12 23:28:18,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 1074 transitions, 32167 flow [2022-12-12 23:28:18,090 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 1074 transitions, 32167 flow [2022-12-12 23:28:18,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:18,090 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:28:18,091 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:28:18,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 23:28:18,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:28:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:28:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 15013662, now seen corresponding path program 1 times [2022-12-12 23:28:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:28:18,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885480949] [2022-12-12 23:28:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:28:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:28:19,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885480949] [2022-12-12 23:28:19,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885480949] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:28:19,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755455408] [2022-12-12 23:28:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:28:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:28:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:28:19,908 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:28:19,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 23:28:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:28:20,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-12 23:28:20,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:28:20,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:28:20,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 23:28:20,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 23:28:20,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 23:28:20,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:28:20,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 36 [2022-12-12 23:28:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:20,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:28:21,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:28:21,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 104 treesize of output 209 [2022-12-12 23:28:26,746 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-12-12 23:28:26,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 1 [2022-12-12 23:28:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:28:27,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755455408] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:28:27,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:28:27,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 30 [2022-12-12 23:28:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087155637] [2022-12-12 23:28:27,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:28:27,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 23:28:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:28:27,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 23:28:27,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2022-12-12 23:28:27,123 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 28 [2022-12-12 23:28:27,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 1074 transitions, 32167 flow. Second operand has 32 states, 32 states have (on average 3.25) internal successors, (104), 32 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:28:27,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:28:27,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 28 [2022-12-12 23:28:27,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:28:35,747 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 89 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 23:28:43,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:28:45,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:29:14,158 WARN L233 SmtUtils]: Spent 16.53s on a formula simplification. DAG size of input: 105 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 23:29:28,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:29:41,959 WARN L233 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 150 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 23:29:56,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:29:59,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:30:11,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:30:16,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:30:18,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:30:26,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:30:28,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:30:31,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-12 23:30:31,699 INFO L130 PetriNetUnfolder]: 28596/40423 cut-off events. [2022-12-12 23:30:31,699 INFO L131 PetriNetUnfolder]: For 148549/148549 co-relation queries the response was YES. [2022-12-12 23:30:31,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630189 conditions, 40423 events. 28596/40423 cut-off events. For 148549/148549 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 252663 event pairs, 0 based on Foata normal form. 17/28310 useless extension candidates. Maximal degree in co-relation 357485. Up to 38871 conditions per place. [2022-12-12 23:30:32,152 INFO L137 encePairwiseOnDemand]: 12/28 looper letters, 11742 selfloop transitions, 6586 changer transitions 158/18492 dead transitions. [2022-12-12 23:30:32,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 18492 transitions, 594606 flow [2022-12-12 23:30:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-12-12 23:30:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2022-12-12 23:30:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1458 transitions. [2022-12-12 23:30:32,168 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5055478502080444 [2022-12-12 23:30:32,169 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2022-12-12 23:30:32,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 18492 transitions, 594606 flow [2022-12-12 23:30:32,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 18334 transitions, 589397 flow [2022-12-12 23:30:32,990 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 18334 transitions, 589397 flow [2022-12-12 23:30:32,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.25) internal successors, (104), 32 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:30:32,991 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:30:32,991 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:30:32,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 23:30:33,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 23:30:33,197 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:30:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:30:33,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1003298582, now seen corresponding path program 2 times [2022-12-12 23:30:33,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:30:33,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419813860] [2022-12-12 23:30:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:30:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:30:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:30:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:30:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:30:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419813860] [2022-12-12 23:30:35,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419813860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:30:35,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152754804] [2022-12-12 23:30:35,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 23:30:35,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:30:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:30:35,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:30:35,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 23:30:35,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:30:35,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:30:35,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-12 23:30:35,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:30:35,903 INFO L321 Elim1Store]: treesize reduction 58, result has 56.4 percent of original size [2022-12-12 23:30:35,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 116 [2022-12-12 23:30:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:30:36,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:30:36,936 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:30:36,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-12-12 23:30:37,003 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-12-12 23:30:37,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 1 [2022-12-12 23:30:37,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:30:37,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 4 [2022-12-12 23:30:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:30:37,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152754804] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:30:37,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:30:37,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 31 [2022-12-12 23:30:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306483989] [2022-12-12 23:30:37,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:30:37,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 23:30:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:30:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 23:30:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2022-12-12 23:30:37,214 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 23:30:37,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 18334 transitions, 589397 flow. Second operand has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:30:37,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:30:37,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 23:30:37,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:34:19,877 INFO L130 PetriNetUnfolder]: 44698/64234 cut-off events. [2022-12-12 23:34:19,877 INFO L131 PetriNetUnfolder]: For 134324/134324 co-relation queries the response was YES. [2022-12-12 23:34:19,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069983 conditions, 64234 events. 44698/64234 cut-off events. For 134324/134324 co-relation queries the response was YES. Maximal size of possible extension queue 2533. Compared 436787 event pairs, 0 based on Foata normal form. 35/46681 useless extension candidates. Maximal degree in co-relation 606352. Up to 62330 conditions per place. [2022-12-12 23:34:20,590 INFO L137 encePairwiseOnDemand]: 10/28 looper letters, 17904 selfloop transitions, 13429 changer transitions 259/31592 dead transitions. [2022-12-12 23:34:20,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 31592 transitions, 1077605 flow [2022-12-12 23:34:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-12 23:34:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-12 23:34:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 597 transitions. [2022-12-12 23:34:20,596 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3090062111801242 [2022-12-12 23:34:20,596 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2022-12-12 23:34:20,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 31592 transitions, 1077605 flow [2022-12-12 23:34:21,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 31333 transitions, 1068484 flow [2022-12-12 23:34:21,713 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 31333 transitions, 1068484 flow [2022-12-12 23:34:21,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:34:21,713 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:34:21,713 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:34:21,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-12 23:34:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-12 23:34:21,919 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:34:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:34:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash 283481440, now seen corresponding path program 3 times [2022-12-12 23:34:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:34:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785462382] [2022-12-12 23:34:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:34:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:34:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:34:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:34:23,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:34:23,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785462382] [2022-12-12 23:34:23,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785462382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:34:23,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715358760] [2022-12-12 23:34:23,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 23:34:23,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:34:23,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:34:23,327 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:34:23,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 23:34:23,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 23:34:23,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:34:23,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-12 23:34:23,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:34:24,261 INFO L321 Elim1Store]: treesize reduction 58, result has 56.4 percent of original size [2022-12-12 23:34:24,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 116 [2022-12-12 23:34:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 23:34:24,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:34:25,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:34:25,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-12-12 23:34:25,326 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-12-12 23:34:25,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 1 [2022-12-12 23:34:25,335 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 23:34:25,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 4 [2022-12-12 23:34:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 23:34:25,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715358760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:34:25,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:34:25,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 31 [2022-12-12 23:34:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041723373] [2022-12-12 23:34:25,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:34:25,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 23:34:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:34:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 23:34:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-12-12 23:34:25,538 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 28 [2022-12-12 23:34:25,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 31333 transitions, 1068484 flow. Second operand has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 23:34:25,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:34:25,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 28 [2022-12-12 23:34:25,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 23:41:37,044 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 23:41:37,044 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 23:41:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-12-12 23:41:37,141 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 23:41:37,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 23:41:37,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 23:41:37,347 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 0/28 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1204748 conditions, 68239 events (48125/68238 cut-off events. For 143009/143009 co-relation queries the response was YES. Maximal size of possible extension queue 2788. Compared 467594 event pairs, 10 based on Foata normal form. 7/49785 useless extension candidates. Maximal degree in co-relation 690745. Up to 66285 conditions per place.). [2022-12-12 23:41:37,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 23:41:37,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 23:41:37,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 23:41:37,349 INFO L445 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1, 1, 1] [2022-12-12 23:41:37,353 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 23:41:37,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 23:41:37,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:41:37 BasicIcfg [2022-12-12 23:41:37,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 23:41:37,356 INFO L158 Benchmark]: Toolchain (without parser) took 821632.25ms. Allocated memory was 183.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 160.5MB in the beginning and 732.4MB in the end (delta: -571.9MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-12-12 23:41:37,356 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 159.8MB in the beginning and 159.7MB in the end (delta: 86.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 23:41:37,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.61ms. Allocated memory is still 183.5MB. Free memory was 160.3MB in the beginning and 148.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 23:41:37,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.08ms. Allocated memory is still 183.5MB. Free memory was 148.8MB in the beginning and 146.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:41:37,357 INFO L158 Benchmark]: Boogie Preprocessor took 43.55ms. Allocated memory is still 183.5MB. Free memory was 146.7MB in the beginning and 145.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:41:37,357 INFO L158 Benchmark]: RCFGBuilder took 552.53ms. Allocated memory is still 183.5MB. Free memory was 145.1MB in the beginning and 127.3MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-12 23:41:37,357 INFO L158 Benchmark]: TraceAbstraction took 820683.18ms. Allocated memory was 183.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 126.2MB in the beginning and 732.4MB in the end (delta: -606.2MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-12-12 23:41:37,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 159.8MB in the beginning and 159.7MB in the end (delta: 86.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 279.61ms. Allocated memory is still 183.5MB. Free memory was 160.3MB in the beginning and 148.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.08ms. Allocated memory is still 183.5MB. Free memory was 148.8MB in the beginning and 146.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.55ms. Allocated memory is still 183.5MB. Free memory was 146.7MB in the beginning and 145.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 552.53ms. Allocated memory is still 183.5MB. Free memory was 145.1MB in the beginning and 127.3MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 820683.18ms. Allocated memory was 183.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 126.2MB in the beginning and 732.4MB in the end (delta: -606.2MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 154 PlacesBefore, 32 PlacesAfterwards, 159 TransitionsBefore, 28 TransitionsAfterwards, 3534 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 70 TrivialYvCompositions, 52 ConcurrentYvCompositions, 9 ChoiceCompositions, 131 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2160, independent: 2142, independent conditional: 2142, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2160, independent: 2142, independent conditional: 0, independent unconditional: 2142, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2160, independent: 2142, independent conditional: 0, independent unconditional: 2142, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2160, independent: 2142, independent conditional: 0, independent unconditional: 2142, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2001, independent: 1989, independent conditional: 0, independent unconditional: 1989, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2001, independent: 1989, independent conditional: 0, independent unconditional: 1989, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 68, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2160, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 2001, unknown conditional: 0, unknown unconditional: 2001] , Statistics on independence cache: Total cache size (in pairs): 3540, Positive cache size: 3528, Positive conditional cache size: 0, Positive unconditional cache size: 3528, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 0/28 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1204748 conditions, 68239 events (48125/68238 cut-off events. For 143009/143009 co-relation queries the response was YES. Maximal size of possible extension queue 2788. Compared 467594 event pairs, 10 based on Foata normal form. 7/49785 useless extension candidates. Maximal degree in co-relation 690745. Up to 66285 conditions per place.). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 0/28 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1204748 conditions, 68239 events (48125/68238 cut-off events. For 143009/143009 co-relation queries the response was YES. Maximal size of possible extension queue 2788. Compared 467594 event pairs, 10 based on Foata normal form. 7/49785 useless extension candidates. Maximal degree in co-relation 690745. Up to 66285 conditions per place.). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 0/28 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1204748 conditions, 68239 events (48125/68238 cut-off events. For 143009/143009 co-relation queries the response was YES. Maximal size of possible extension queue 2788. Compared 467594 event pairs, 10 based on Foata normal form. 7/49785 useless extension candidates. Maximal degree in co-relation 690745. Up to 66285 conditions per place.). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (32states, 0/28 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 1204748 conditions, 68239 events (48125/68238 cut-off events. For 143009/143009 co-relation queries the response was YES. Maximal size of possible extension queue 2788. Compared 467594 event pairs, 10 based on Foata normal form. 7/49785 useless extension candidates. Maximal degree in co-relation 690745. Up to 66285 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 2.3s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 820.5s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 787.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 2673 SdHoareTripleChecker+Valid, 33.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2673 mSDsluCounter, 341 SdHoareTripleChecker+Invalid, 32.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 288 mSDsCounter, 242 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12183 IncrementalHoareTripleChecker+Invalid, 12436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 242 mSolverCounterUnsat, 53 mSDtfsCounter, 12183 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 997 GetRequests, 474 SyntacticMatches, 16 SemanticMatches, 507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13226 ImplicationChecksByTransitivity, 110.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068484occurred in iteration=16, InterpolantAutomatonStates: 270, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 15019 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 19.8s InterpolantComputationTime, 710 NumberOfCodeBlocks, 710 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 977 ConstructedInterpolants, 6 QuantifiedInterpolants, 11322 SizeOfPredicates, 128 NumberOfNonLiveVariables, 3039 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 43 InterpolantComputations, 10 PerfectInterpolantSequences, 77/158 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown