/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:24:52,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:24:52,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:24:52,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:24:52,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:24:52,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:24:52,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:24:52,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:24:52,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:24:52,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:24:52,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:24:52,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:24:52,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:24:52,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:24:52,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:24:52,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:24:52,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:24:52,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:24:52,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:24:52,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:24:52,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:24:52,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:24:52,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:24:52,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:24:52,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:24:52,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:24:52,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:24:52,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:24:52,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:24:52,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 06:24:52,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:24:52,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:24:52,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:24:52,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:24:52,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:24:52,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:24:52,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:24:52,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:24:52,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:24:52,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:24:52,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:24:52,920 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-VariableLbe.epf [2023-01-28 06:24:52,945 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:24:52,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:24:52,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:24:52,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:24:52,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:24:52,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:24:52,947 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:24:52,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:24:52,947 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:24:52,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:24:52,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:24:52,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:24:52,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:24:52,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:24:52,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:24:52,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:24:52,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:24:52,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:24:52,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:24:52,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:24:52,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:24:52,949 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:24:53,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:24:53,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:24:53,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:24:53,151 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:24:53,152 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:24:53,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-01-28 06:24:54,033 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:24:54,275 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:24:54,275 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-01-28 06:24:54,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac1bc6b2/b3a4046eb1dd4b78bdec32c16ee32cef/FLAGc6dddd303 [2023-01-28 06:24:54,310 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac1bc6b2/b3a4046eb1dd4b78bdec32c16ee32cef [2023-01-28 06:24:54,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:24:54,312 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:24:54,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:24:54,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:24:54,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:24:54,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2498567a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54, skipping insertion in model container [2023-01-28 06:24:54,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:24:54,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:24:54,642 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-01-28 06:24:54,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:24:54,670 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:24:54,698 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2023-01-28 06:24:54,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:24:54,740 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:24:54,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54 WrapperNode [2023-01-28 06:24:54,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:24:54,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:24:54,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:24:54,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:24:54,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,779 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 160 [2023-01-28 06:24:54,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:24:54,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:24:54,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:24:54,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:24:54,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:24:54,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:24:54,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:24:54,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:24:54,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (1/1) ... [2023-01-28 06:24:54,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:24:54,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:24:54,826 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) [2023-01-28 06:24:54,827 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 [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-28 06:24:54,866 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-28 06:24:54,866 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 06:24:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:24:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:24:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:24:54,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:24:54,868 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 06:24:55,041 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:24:55,042 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:24:55,226 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:24:55,232 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:24:55,232 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 06:24:55,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:24:55 BoogieIcfgContainer [2023-01-28 06:24:55,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:24:55,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:24:55,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:24:55,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:24:55,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:24:54" (1/3) ... [2023-01-28 06:24:55,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532290b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:24:55, skipping insertion in model container [2023-01-28 06:24:55,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:24:54" (2/3) ... [2023-01-28 06:24:55,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532290b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:24:55, skipping insertion in model container [2023-01-28 06:24:55,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:24:55" (3/3) ... [2023-01-28 06:24:55,238 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-01-28 06:24:55,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:24:55,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 06:24:55,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:24:55,324 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 06:24:55,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 162 transitions, 340 flow [2023-01-28 06:24:55,412 INFO L130 PetriNetUnfolder]: 10/160 cut-off events. [2023-01-28 06:24:55,412 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:24:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 160 events. 10/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 379 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-01-28 06:24:55,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 162 transitions, 340 flow [2023-01-28 06:24:55,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 151 transitions, 311 flow [2023-01-28 06:24:55,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:24:55,431 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 151 transitions, 311 flow [2023-01-28 06:24:55,432 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 151 transitions, 311 flow [2023-01-28 06:24:55,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 151 transitions, 311 flow [2023-01-28 06:24:55,453 INFO L130 PetriNetUnfolder]: 10/151 cut-off events. [2023-01-28 06:24:55,453 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 06:24:55,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 151 events. 10/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 311 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-01-28 06:24:55,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 7334 [2023-01-28 06:24:58,761 INFO L134 LiptonReduction]: Checked pairs total: 9688 [2023-01-28 06:24:58,761 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-01-28 06:24:58,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:24:58,778 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;@4e8078cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:24:58,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 06:24:58,782 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-28 06:24:58,782 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 06:24:58,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:24:58,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 06:24:58,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:24:58,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:24:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2091505467, now seen corresponding path program 1 times [2023-01-28 06:24:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:24:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659207632] [2023-01-28 06:24:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:24:58,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:24:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:24:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:24:59,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:24:59,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659207632] [2023-01-28 06:24:59,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659207632] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:24:59,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:24:59,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:24:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191753913] [2023-01-28 06:24:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:24:59,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:24:59,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:24:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:24:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:24:59,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 303 [2023-01-28 06:24:59,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-01-28 06:24:59,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:24:59,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 303 [2023-01-28 06:24:59,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:24:59,259 INFO L130 PetriNetUnfolder]: 917/1474 cut-off events. [2023-01-28 06:24:59,259 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-01-28 06:24:59,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 1474 events. 917/1474 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6122 event pairs, 270 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 2788. Up to 840 conditions per place. [2023-01-28 06:24:59,281 INFO L137 encePairwiseOnDemand]: 298/303 looper letters, 57 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-01-28 06:24:59,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 259 flow [2023-01-28 06:24:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:24:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:24:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-01-28 06:24:59,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335533553355336 [2023-01-28 06:24:59,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-01-28 06:24:59,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-01-28 06:24:59,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:24:59,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-01-28 06:24:59,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-01-28 06:24:59,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:24:59,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:24:59,310 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 75 flow. Second operand 3 states and 485 transitions. [2023-01-28 06:24:59,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 259 flow [2023-01-28 06:24:59,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 61 transitions, 251 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 06:24:59,314 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 100 flow [2023-01-28 06:24:59,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-01-28 06:24:59,317 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-01-28 06:24:59,317 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 100 flow [2023-01-28 06:24:59,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-01-28 06:24:59,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:24:59,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:24:59,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:24:59,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:24:59,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:24:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash 985591015, now seen corresponding path program 1 times [2023-01-28 06:24:59,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:24:59,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472488788] [2023-01-28 06:24:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:24:59,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:24:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:24:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:24:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:24:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472488788] [2023-01-28 06:24:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472488788] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:24:59,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:24:59,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:24:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923688762] [2023-01-28 06:24:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:24:59,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:24:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:24:59,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:24:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:24:59,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 303 [2023-01-28 06:24:59,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-01-28 06:24:59,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:24:59,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 303 [2023-01-28 06:24:59,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:24:59,597 INFO L130 PetriNetUnfolder]: 897/1480 cut-off events. [2023-01-28 06:24:59,598 INFO L131 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2023-01-28 06:24:59,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 1480 events. 897/1480 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6152 event pairs, 398 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 2952. Up to 1184 conditions per place. [2023-01-28 06:24:59,603 INFO L137 encePairwiseOnDemand]: 300/303 looper letters, 48 selfloop transitions, 2 changer transitions 3/54 dead transitions. [2023-01-28 06:24:59,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 249 flow [2023-01-28 06:24:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:24:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:24:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-01-28 06:24:59,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412541254125413 [2023-01-28 06:24:59,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-01-28 06:24:59,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-01-28 06:24:59,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:24:59,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-01-28 06:24:59,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 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) [2023-01-28 06:24:59,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:24:59,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:24:59,611 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 100 flow. Second operand 3 states and 492 transitions. [2023-01-28 06:24:59,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 249 flow [2023-01-28 06:24:59,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:24:59,613 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 104 flow [2023-01-28 06:24:59,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-01-28 06:24:59,615 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-01-28 06:24:59,615 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 104 flow [2023-01-28 06:24:59,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-01-28 06:24:59,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:24:59,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:24:59,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:24:59,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:24:59,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:24:59,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1796788492, now seen corresponding path program 1 times [2023-01-28 06:24:59,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:24:59,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164169336] [2023-01-28 06:24:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:24:59,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:24:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:24:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:24:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:24:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164169336] [2023-01-28 06:24:59,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164169336] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:24:59,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:24:59,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:24:59,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972295986] [2023-01-28 06:24:59,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:24:59,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:24:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:24:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:24:59,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:24:59,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 303 [2023-01-28 06:24:59,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2023-01-28 06:24:59,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:24:59,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 303 [2023-01-28 06:24:59,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:24:59,843 INFO L130 PetriNetUnfolder]: 953/1566 cut-off events. [2023-01-28 06:24:59,843 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-01-28 06:24:59,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 1566 events. 953/1566 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6650 event pairs, 659 based on Foata normal form. 56/1460 useless extension candidates. Maximal degree in co-relation 3214. Up to 1397 conditions per place. [2023-01-28 06:24:59,849 INFO L137 encePairwiseOnDemand]: 300/303 looper letters, 52 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-01-28 06:24:59,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 270 flow [2023-01-28 06:24:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:24:59,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:24:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-01-28 06:24:59,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346534653465347 [2023-01-28 06:24:59,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-01-28 06:24:59,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-01-28 06:24:59,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:24:59,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-01-28 06:24:59,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2023-01-28 06:24:59,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:24:59,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:24:59,854 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 104 flow. Second operand 3 states and 486 transitions. [2023-01-28 06:24:59,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 270 flow [2023-01-28 06:24:59,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:24:59,856 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 122 flow [2023-01-28 06:24:59,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-01-28 06:24:59,856 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-01-28 06:24:59,856 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 122 flow [2023-01-28 06:24:59,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2023-01-28 06:24:59,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:24:59,857 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:24:59,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:24:59,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:24:59,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:24:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1638577751, now seen corresponding path program 1 times [2023-01-28 06:24:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:24:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214982624] [2023-01-28 06:24:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:24:59,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:24:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:24:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:24:59,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:24:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214982624] [2023-01-28 06:24:59,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214982624] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:24:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950241623] [2023-01-28 06:24:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:24:59,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:24:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:24:59,948 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) [2023-01-28 06:24:59,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 06:25:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:25:00,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 06:25:00,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:25:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:25:00,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:25:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:25:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950241623] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:25:00,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:25:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-28 06:25:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702155036] [2023-01-28 06:25:00,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:25:00,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 06:25:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:25:00,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 06:25:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 06:25:00,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 303 [2023-01-28 06:25:00,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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) [2023-01-28 06:25:00,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:25:00,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 303 [2023-01-28 06:25:00,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:25:00,597 INFO L130 PetriNetUnfolder]: 1986/3223 cut-off events. [2023-01-28 06:25:00,597 INFO L131 PetriNetUnfolder]: For 1186/1186 co-relation queries the response was YES. [2023-01-28 06:25:00,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 3223 events. 1986/3223 cut-off events. For 1186/1186 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15001 event pairs, 399 based on Foata normal form. 52/2955 useless extension candidates. Maximal degree in co-relation 7184. Up to 909 conditions per place. [2023-01-28 06:25:00,609 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 173 selfloop transitions, 22 changer transitions 0/195 dead transitions. [2023-01-28 06:25:00,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 195 transitions, 934 flow [2023-01-28 06:25:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 06:25:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 06:25:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1584 transitions. [2023-01-28 06:25:00,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227722772277228 [2023-01-28 06:25:00,614 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1584 transitions. [2023-01-28 06:25:00,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1584 transitions. [2023-01-28 06:25:00,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:25:00,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1584 transitions. [2023-01-28 06:25:00,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 158.4) internal successors, (1584), 10 states have internal predecessors, (1584), 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) [2023-01-28 06:25:00,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 303.0) internal successors, (3333), 11 states have internal predecessors, (3333), 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) [2023-01-28 06:25:00,622 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 303.0) internal successors, (3333), 11 states have internal predecessors, (3333), 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) [2023-01-28 06:25:00,623 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 122 flow. Second operand 10 states and 1584 transitions. [2023-01-28 06:25:00,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 195 transitions, 934 flow [2023-01-28 06:25:00,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 195 transitions, 921 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:25:00,628 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 280 flow [2023-01-28 06:25:00,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2023-01-28 06:25:00,628 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-01-28 06:25:00,629 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 280 flow [2023-01-28 06:25:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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) [2023-01-28 06:25:00,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:25:00,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:25:00,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 06:25:00,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:25:00,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:25:00,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:25:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1568042570, now seen corresponding path program 1 times [2023-01-28 06:25:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:25:00,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376510951] [2023-01-28 06:25:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:25:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:25:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:25:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:25:00,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:25:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376510951] [2023-01-28 06:25:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376510951] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:25:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:25:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:25:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235173403] [2023-01-28 06:25:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:25:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:25:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:25:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:25:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:25:00,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 303 [2023-01-28 06:25:00,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-01-28 06:25:00,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:25:00,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 303 [2023-01-28 06:25:00,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:25:01,024 INFO L130 PetriNetUnfolder]: 606/1135 cut-off events. [2023-01-28 06:25:01,024 INFO L131 PetriNetUnfolder]: For 415/415 co-relation queries the response was YES. [2023-01-28 06:25:01,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 1135 events. 606/1135 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4845 event pairs, 98 based on Foata normal form. 0/1055 useless extension candidates. Maximal degree in co-relation 2292. Up to 850 conditions per place. [2023-01-28 06:25:01,029 INFO L137 encePairwiseOnDemand]: 298/303 looper letters, 47 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-01-28 06:25:01,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 331 flow [2023-01-28 06:25:01,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:25:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:25:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-01-28 06:25:01,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093509350935094 [2023-01-28 06:25:01,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-01-28 06:25:01,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-01-28 06:25:01,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:25:01,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-01-28 06:25:01,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2023-01-28 06:25:01,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:25:01,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 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) [2023-01-28 06:25:01,034 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 280 flow. Second operand 3 states and 463 transitions. [2023-01-28 06:25:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 331 flow [2023-01-28 06:25:01,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 319 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 06:25:01,037 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 204 flow [2023-01-28 06:25:01,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-28 06:25:01,040 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-01-28 06:25:01,040 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 204 flow [2023-01-28 06:25:01,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-01-28 06:25:01,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:25:01,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:25:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:25:01,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:25:01,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:25:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash 321710418, now seen corresponding path program 1 times [2023-01-28 06:25:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:25:01,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104787678] [2023-01-28 06:25:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:25:01,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:25:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:25:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:25:01,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:25:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104787678] [2023-01-28 06:25:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104787678] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:25:01,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:25:01,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:25:01,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112691625] [2023-01-28 06:25:01,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:25:01,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:25:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:25:01,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:25:01,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:25:01,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 303 [2023-01-28 06:25:01,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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) [2023-01-28 06:25:01,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:25:01,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 303 [2023-01-28 06:25:01,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:25:01,276 INFO L130 PetriNetUnfolder]: 718/1317 cut-off events. [2023-01-28 06:25:01,277 INFO L131 PetriNetUnfolder]: For 378/378 co-relation queries the response was YES. [2023-01-28 06:25:01,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1317 events. 718/1317 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5602 event pairs, 236 based on Foata normal form. 18/1335 useless extension candidates. Maximal degree in co-relation 2798. Up to 702 conditions per place. [2023-01-28 06:25:01,281 INFO L137 encePairwiseOnDemand]: 297/303 looper letters, 81 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2023-01-28 06:25:01,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 534 flow [2023-01-28 06:25:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:25:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:25:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 923 transitions. [2023-01-28 06:25:01,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077007700770076 [2023-01-28 06:25:01,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 923 transitions. [2023-01-28 06:25:01,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 923 transitions. [2023-01-28 06:25:01,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:25:01,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 923 transitions. [2023-01-28 06:25:01,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.83333333333334) internal successors, (923), 6 states have internal predecessors, (923), 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) [2023-01-28 06:25:01,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 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) [2023-01-28 06:25:01,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 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) [2023-01-28 06:25:01,288 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 204 flow. Second operand 6 states and 923 transitions. [2023-01-28 06:25:01,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 534 flow [2023-01-28 06:25:01,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:25:01,290 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 271 flow [2023-01-28 06:25:01,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-01-28 06:25:01,291 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-01-28 06:25:01,291 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 271 flow [2023-01-28 06:25:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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) [2023-01-28 06:25:01,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:25:01,292 INFO L208 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] [2023-01-28 06:25:01,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 06:25:01,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:25:01,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:25:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2070456889, now seen corresponding path program 1 times [2023-01-28 06:25:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:25:01,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402863469] [2023-01-28 06:25:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:25:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:25:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:25:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:25:01,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:25:01,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402863469] [2023-01-28 06:25:01,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402863469] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:25:01,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:25:01,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-28 06:25:01,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907931958] [2023-01-28 06:25:01,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:25:01,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 06:25:01,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:25:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 06:25:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-01-28 06:25:01,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 303 [2023-01-28 06:25:01,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 271 flow. Second operand has 16 states, 16 states have (on average 96.375) internal successors, (1542), 16 states have internal predecessors, (1542), 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) [2023-01-28 06:25:01,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:25:01,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 303 [2023-01-28 06:25:01,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:25:02,820 INFO L130 PetriNetUnfolder]: 1006/1842 cut-off events. [2023-01-28 06:25:02,820 INFO L131 PetriNetUnfolder]: For 1064/1064 co-relation queries the response was YES. [2023-01-28 06:25:02,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 1842 events. 1006/1842 cut-off events. For 1064/1064 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8702 event pairs, 306 based on Foata normal form. 4/1828 useless extension candidates. Maximal degree in co-relation 3526. Up to 1181 conditions per place. [2023-01-28 06:25:02,828 INFO L137 encePairwiseOnDemand]: 286/303 looper letters, 136 selfloop transitions, 23 changer transitions 3/162 dead transitions. [2023-01-28 06:25:02,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 162 transitions, 917 flow [2023-01-28 06:25:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 06:25:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 06:25:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1478 transitions. [2023-01-28 06:25:02,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34842055634134844 [2023-01-28 06:25:02,833 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1478 transitions. [2023-01-28 06:25:02,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1478 transitions. [2023-01-28 06:25:02,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:25:02,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1478 transitions. [2023-01-28 06:25:02,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.57142857142857) internal successors, (1478), 14 states have internal predecessors, (1478), 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) [2023-01-28 06:25:02,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 303.0) internal successors, (4545), 15 states have internal predecessors, (4545), 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) [2023-01-28 06:25:02,841 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 303.0) internal successors, (4545), 15 states have internal predecessors, (4545), 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) [2023-01-28 06:25:02,841 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 271 flow. Second operand 14 states and 1478 transitions. [2023-01-28 06:25:02,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 162 transitions, 917 flow [2023-01-28 06:25:02,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 162 transitions, 894 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 06:25:02,846 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 465 flow [2023-01-28 06:25:02,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=465, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-01-28 06:25:02,847 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 43 predicate places. [2023-01-28 06:25:02,847 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 465 flow [2023-01-28 06:25:02,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 96.375) internal successors, (1542), 16 states have internal predecessors, (1542), 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) [2023-01-28 06:25:02,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:25:02,848 INFO L208 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] [2023-01-28 06:25:02,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 06:25:02,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:25:02,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:25:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -734851743, now seen corresponding path program 2 times [2023-01-28 06:25:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:25:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044401912] [2023-01-28 06:25:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:25:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:25:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:25:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:25:03,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:25:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044401912] [2023-01-28 06:25:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044401912] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:25:03,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:25:03,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-28 06:25:03,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389588862] [2023-01-28 06:25:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:25:03,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 06:25:03,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:25:03,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 06:25:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-01-28 06:25:03,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 303 [2023-01-28 06:25:03,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 465 flow. Second operand has 16 states, 16 states have (on average 96.375) internal successors, (1542), 16 states have internal predecessors, (1542), 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) [2023-01-28 06:25:03,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:25:03,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 303 [2023-01-28 06:25:03,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:25:04,273 INFO L130 PetriNetUnfolder]: 1244/2276 cut-off events. [2023-01-28 06:25:04,274 INFO L131 PetriNetUnfolder]: For 1796/1796 co-relation queries the response was YES. [2023-01-28 06:25:04,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6565 conditions, 2276 events. 1244/2276 cut-off events. For 1796/1796 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10700 event pairs, 350 based on Foata normal form. 4/2256 useless extension candidates. Maximal degree in co-relation 4346. Up to 1108 conditions per place. [2023-01-28 06:25:04,286 INFO L137 encePairwiseOnDemand]: 287/303 looper letters, 138 selfloop transitions, 36 changer transitions 3/177 dead transitions. [2023-01-28 06:25:04,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 177 transitions, 1195 flow [2023-01-28 06:25:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 06:25:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 06:25:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1478 transitions. [2023-01-28 06:25:04,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34842055634134844 [2023-01-28 06:25:04,290 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1478 transitions. [2023-01-28 06:25:04,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1478 transitions. [2023-01-28 06:25:04,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:25:04,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1478 transitions. [2023-01-28 06:25:04,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.57142857142857) internal successors, (1478), 14 states have internal predecessors, (1478), 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) [2023-01-28 06:25:04,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 303.0) internal successors, (4545), 15 states have internal predecessors, (4545), 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) [2023-01-28 06:25:04,299 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 303.0) internal successors, (4545), 15 states have internal predecessors, (4545), 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) [2023-01-28 06:25:04,299 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 465 flow. Second operand 14 states and 1478 transitions. [2023-01-28 06:25:04,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 177 transitions, 1195 flow [2023-01-28 06:25:04,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 177 transitions, 1191 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 06:25:04,306 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 730 flow [2023-01-28 06:25:04,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=730, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2023-01-28 06:25:04,308 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 65 predicate places. [2023-01-28 06:25:04,308 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 730 flow [2023-01-28 06:25:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 96.375) internal successors, (1542), 16 states have internal predecessors, (1542), 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) [2023-01-28 06:25:04,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:25:04,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:25:04,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 06:25:04,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 06:25:04,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:25:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2144319276, now seen corresponding path program 1 times [2023-01-28 06:25:04,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:25:04,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405492971] [2023-01-28 06:25:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:25:04,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:25:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:25:04,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 06:25:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:25:04,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 06:25:04,384 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 06:25:04,385 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 06:25:04,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-01-28 06:25:04,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 06:25:04,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-28 06:25:04,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-28 06:25:04,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 06:25:04,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 06:25:04,388 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:25:04,392 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:25:04,392 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:25:04,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:25:04 BasicIcfg [2023-01-28 06:25:04,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:25:04,445 INFO L158 Benchmark]: Toolchain (without parser) took 10132.67ms. Allocated memory was 373.3MB in the beginning and 568.3MB in the end (delta: 195.0MB). Free memory was 341.0MB in the beginning and 296.4MB in the end (delta: 44.6MB). Peak memory consumption was 243.6MB. Max. memory is 16.0GB. [2023-01-28 06:25:04,445 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:25:04,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 427.63ms. Allocated memory is still 373.3MB. Free memory was 340.8MB in the beginning and 311.5MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-28 06:25:04,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.94ms. Allocated memory is still 373.3MB. Free memory was 311.5MB in the beginning and 308.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 06:25:04,445 INFO L158 Benchmark]: Boogie Preprocessor took 20.63ms. Allocated memory is still 373.3MB. Free memory was 308.8MB in the beginning and 306.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:25:04,446 INFO L158 Benchmark]: RCFGBuilder took 431.93ms. Allocated memory is still 373.3MB. Free memory was 306.7MB in the beginning and 289.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-28 06:25:04,446 INFO L158 Benchmark]: TraceAbstraction took 9209.79ms. Allocated memory was 373.3MB in the beginning and 568.3MB in the end (delta: 195.0MB). Free memory was 288.9MB in the beginning and 296.4MB in the end (delta: -7.5MB). Peak memory consumption was 191.2MB. Max. memory is 16.0GB. [2023-01-28 06:25:04,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 427.63ms. Allocated memory is still 373.3MB. Free memory was 340.8MB in the beginning and 311.5MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.94ms. Allocated memory is still 373.3MB. Free memory was 311.5MB in the beginning and 308.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.63ms. Allocated memory is still 373.3MB. Free memory was 308.8MB in the beginning and 306.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 431.93ms. Allocated memory is still 373.3MB. Free memory was 306.7MB in the beginning and 289.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 9209.79ms. Allocated memory was 373.3MB in the beginning and 568.3MB in the end (delta: 195.0MB). Free memory was 288.9MB in the beginning and 296.4MB in the end (delta: -7.5MB). Peak memory consumption was 191.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 148 PlacesBefore, 35 PlacesAfterwards, 151 TransitionsBefore, 33 TransitionsAfterwards, 7334 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 5 ChoiceCompositions, 141 TotalNumberOfCompositions, 9688 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6870, independent: 6685, independent conditional: 0, independent unconditional: 6685, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4087, independent: 4036, independent conditional: 0, independent unconditional: 4036, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6870, independent: 2649, independent conditional: 0, independent unconditional: 2649, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 4087, unknown conditional: 0, unknown unconditional: 4087] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 941]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(5)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1021] 0 pthread_t id1, id2; [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={9:0}, id2={6:0}, m={4:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=13, top=0] [L990] 1 int i; [L991] 1 unsigned int tmp; [L992] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={9:0}, id2={6:0}, m={4:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=14, top=0] [L1006] 2 int i; [L1007] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L992] COND TRUE 1 i<(5) [L995] 1 tmp = __VERIFIER_nondet_uint() [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) [L969] CALL, EXPR 1 get_top() [L954] 1 return top; [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x [L970] CALL 1 inc_top() [L946] 1 top++ [L970] RET 1 inc_top() [L972] 1 return 0; [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=4, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=4, top=1] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=1, arr={3:0}, flag=1, m={4:0}, top=1] [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] [L984] 2 return stack[get_top()]; [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; [L976] RET, EXPR 2 get_top() [L976] COND TRUE 2 get_top()==0 [L979] 2 return (-2); [L1012] RET, EXPR 2 pop(arr) [L1012] COND TRUE 2 !(pop(arr)!=(-2)) [L1013] CALL 2 error() [L941] 2 reach_error() VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 254 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 521 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 521 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3262 IncrementalHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 0 mSDtfsCounter, 3262 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730occurred in iteration=8, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 1281 SizeOfPredicates, 1 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 3/9 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 proved your program to be incorrect! [2023-01-28 06:25:04,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...