/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerCInline.xml -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-syntacticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 14:03:10,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 14:03:10,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 14:03:10,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-26 14:03:10,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-26 14:03:10,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-26 14:03:10,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-26 14:03:10,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-26 14:03:10,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-26 14:03:10,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-26 14:03:10,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-26 14:03:10,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-26 14:03:10,992 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-26 14:03:10,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-26 14:03:10,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-26 14:03:10,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-26 14:03:10,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-26 14:03:10,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-07-26 14:03:11,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-26 14:03:11,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-26 14:03:11,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-26 14:03:11,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-syntacticLbe.epf [2022-07-26 14:03:11,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 14:03:11,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 14:03:11,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 14:03:11,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 14:03:11,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 14:03:11,020 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 14:03:11,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 14:03:11,020 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 14:03:11,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 14:03:11,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 14:03:11,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 14:03:11,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 14:03:11,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 14:03:11,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 14:03:11,022 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-07-26 14:03:11,023 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 14:03:11,023 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 14:03:11,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 14:03:11,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 14:03:11,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 14:03:11,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 14:03:11,250 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 14:03:11,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2b.i [2022-07-26 14:03:11,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df406e4e0/c1288fc839fb4932b93a48af5edf6982/FLAG1a0af73d2 [2022-07-26 14:03:11,716 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 14:03:11,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2b.i [2022-07-26 14:03:11,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df406e4e0/c1288fc839fb4932b93a48af5edf6982/FLAG1a0af73d2 [2022-07-26 14:03:11,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df406e4e0/c1288fc839fb4932b93a48af5edf6982 [2022-07-26 14:03:11,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 14:03:11,747 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 14:03:11,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 14:03:11,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 14:03:11,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 14:03:11,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 02:03:11" (1/1) ... [2022-07-26 14:03:11,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbf1d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:11, skipping insertion in model container [2022-07-26 14:03:11,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 02:03:11" (1/1) ... [2022-07-26 14:03:11,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 14:03:11,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 14:03:12,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-07-26 14:03:12,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 14:03:12,126 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 14:03:12,152 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-07-26 14:03:12,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 14:03:12,184 INFO L208 MainTranslator]: Completed translation [2022-07-26 14:03:12,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12 WrapperNode [2022-07-26 14:03:12,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 14:03:12,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 14:03:12,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 14:03:12,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 14:03:12,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,238 INFO L137 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2022-07-26 14:03:12,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 14:03:12,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 14:03:12,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 14:03:12,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 14:03:12,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 14:03:12,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 14:03:12,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 14:03:12,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 14:03:12,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (1/1) ... [2022-07-26 14:03:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 14:03:12,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 14:03:12,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-26 14:03:12,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-26 14:03:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-26 14:03:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 14:03:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 14:03:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-07-26 14:03:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-07-26 14:03:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 14:03:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 14:03:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 14:03:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 14:03:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 14:03:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-07-26 14:03:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-07-26 14:03:12,323 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-26 14:03:12,400 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 14:03:12,401 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 14:03:12,541 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 14:03:12,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 14:03:12,560 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-26 14:03:12,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 02:03:12 BoogieIcfgContainer [2022-07-26 14:03:12,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 14:03:12,563 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 14:03:12,563 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 14:03:12,565 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 14:03:12,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 14:03:12,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 02:03:11" (1/3) ... [2022-07-26 14:03:12,566 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fe62644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 02:03:12, skipping insertion in model container [2022-07-26 14:03:12,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 14:03:12,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 02:03:12" (2/3) ... [2022-07-26 14:03:12,567 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fe62644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 02:03:12, skipping insertion in model container [2022-07-26 14:03:12,567 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 14:03:12,567 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 02:03:12" (3/3) ... [2022-07-26 14:03:12,568 INFO L322 chiAutomizerObserver]: Analyzing ICFG read_write_lock-2b.i [2022-07-26 14:03:12,616 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-26 14:03:12,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 114 transitions, 260 flow [2022-07-26 14:03:12,673 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2022-07-26 14:03:12,673 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-26 14:03:12,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 106 events. 2/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-07-26 14:03:12,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 114 transitions, 260 flow [2022-07-26 14:03:12,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 106 transitions, 236 flow [2022-07-26 14:03:12,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-07-26 14:03:12,702 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 106 transitions, 236 flow [2022-07-26 14:03:12,704 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 106 transitions, 236 flow [2022-07-26 14:03:12,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 236 flow [2022-07-26 14:03:12,720 INFO L129 PetriNetUnfolder]: 2/106 cut-off events. [2022-07-26 14:03:12,721 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-26 14:03:12,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 106 events. 2/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-07-26 14:03:12,723 INFO L116 LiptonReduction]: Number of co-enabled transitions 2246 [2022-07-26 14:03:15,283 INFO L131 LiptonReduction]: Checked pairs total: 7697 [2022-07-26 14:03:15,283 INFO L133 LiptonReduction]: Total number of compositions: 75 [2022-07-26 14:03:15,295 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 14:03:15,295 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 14:03:15,295 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 14:03:15,295 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 14:03:15,295 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 14:03:15,295 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 14:03:15,295 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 14:03:15,295 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 14:03:15,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 14:03:15,536 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-26 14:03:15,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-26 14:03:15,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 02:03:15 BoogieIcfgContainer [2022-07-26 14:03:15,539 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 14:03:15,541 INFO L158 Benchmark]: Toolchain (without parser) took 3793.24ms. Allocated memory was 259.0MB in the beginning and 433.1MB in the end (delta: 174.1MB). Free memory was 201.5MB in the beginning and 208.8MB in the end (delta: -7.3MB). Peak memory consumption was 167.4MB. Max. memory is 8.0GB. [2022-07-26 14:03:15,541 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 259.0MB. Free memory is still 219.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 14:03:15,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.29ms. Allocated memory was 259.0MB in the beginning and 433.1MB in the end (delta: 174.1MB). Free memory was 201.2MB in the beginning and 393.5MB in the end (delta: -192.3MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. [2022-07-26 14:03:15,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.94ms. Allocated memory is still 433.1MB. Free memory was 393.5MB in the beginning and 391.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 14:03:15,543 INFO L158 Benchmark]: Boogie Preprocessor took 28.90ms. Allocated memory is still 433.1MB. Free memory was 391.3MB in the beginning and 389.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 14:03:15,544 INFO L158 Benchmark]: RCFGBuilder took 293.17ms. Allocated memory is still 433.1MB. Free memory was 389.8MB in the beginning and 375.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-07-26 14:03:15,544 INFO L158 Benchmark]: BuchiAutomizer took 2976.93ms. Allocated memory is still 433.1MB. Free memory was 374.6MB in the beginning and 208.8MB in the end (delta: 165.9MB). Peak memory consumption was 166.3MB. Max. memory is 8.0GB. [2022-07-26 14:03:15,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 259.0MB. Free memory is still 219.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 436.29ms. Allocated memory was 259.0MB in the beginning and 433.1MB in the end (delta: 174.1MB). Free memory was 201.2MB in the beginning and 393.5MB in the end (delta: -192.3MB). Peak memory consumption was 7.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.94ms. Allocated memory is still 433.1MB. Free memory was 393.5MB in the beginning and 391.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.90ms. Allocated memory is still 433.1MB. Free memory was 391.3MB in the beginning and 389.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 293.17ms. Allocated memory is still 433.1MB. Free memory was 389.8MB in the beginning and 375.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * BuchiAutomizer took 2976.93ms. Allocated memory is still 433.1MB. Free memory was 374.6MB in the beginning and 208.8MB in the end (delta: 165.9MB). Peak memory consumption was 166.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition. There is no loop in your program. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 0 iterations. TraceHistogramMax:0. Analysis of lassos took 0.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 2.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 117 PlacesBefore, 48 PlacesAfterwards, 106 TransitionsBefore, 37 TransitionsAfterwards, 2246 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 75 TotalNumberOfCompositions, 7697 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3685, positive: 3466, positive conditional: 0, positive unconditional: 3466, negative: 219, negative conditional: 0, negative unconditional: 219, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1201, positive: 1167, positive conditional: 0, positive unconditional: 1167, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3685, positive: 2299, positive conditional: 0, positive unconditional: 2299, negative: 185, negative conditional: 0, negative unconditional: 185, unknown: 1201, unknown conditional: 0, unknown unconditional: 1201] , Statistics on independence cache: Total cache size (in pairs): 177, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 RESULT: Ultimate proved your program to be correct! [2022-07-26 14:03:15,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...