/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-semanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 13:44:14,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 13:44:14,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 13:44:14,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-26 13:44:14,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-26 13:44:14,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-26 13:44:14,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-26 13:44:14,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-26 13:44:14,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-26 13:44:14,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-26 13:44:14,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-26 13:44:14,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-26 13:44:14,501 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-26 13:44:14,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-26 13:44:14,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-26 13:44:14,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-26 13:44:14,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-26 13:44:14,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-07-26 13:44:14,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-26 13:44:14,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-26 13:44:14,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-26 13:44:14,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf [2022-07-26 13:44:14,527 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 13:44:14,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 13:44:14,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 13:44:14,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 13:44:14,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 13:44:14,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 13:44:14,528 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 13:44:14,528 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 13:44:14,529 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 13:44:14,529 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 13:44:14,529 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 13:44:14,529 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 13:44:14,529 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 13:44:14,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 13:44:14,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 13:44:14,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 13:44:14,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 13:44:14,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 13:44:14,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 13:44:14,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 13:44:14,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 13:44:14,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 13:44:14,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 13:44:14,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 13:44:14,531 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 13:44:14,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 13:44:14,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 13:44:14,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 13:44:14,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 13:44:14,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 13:44:14,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 13:44:14,532 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 13:44:14,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 13:44:14,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 13:44:14,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 13:44:14,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 13:44:14,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 13:44:14,704 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 13:44:14,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1b.i [2022-07-26 13:44:14,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77260331b/cec0204739064e8ba4b29e6455fd1718/FLAG680778b57 [2022-07-26 13:44:15,217 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 13:44:15,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1b.i [2022-07-26 13:44:15,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77260331b/cec0204739064e8ba4b29e6455fd1718/FLAG680778b57 [2022-07-26 13:44:15,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77260331b/cec0204739064e8ba4b29e6455fd1718 [2022-07-26 13:44:15,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 13:44:15,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 13:44:15,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 13:44:15,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 13:44:15,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 13:44:15,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:15,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bdada5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15, skipping insertion in model container [2022-07-26 13:44:15,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:15,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 13:44:15,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 13:44:16,013 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-1b.i[30416,30429] [2022-07-26 13:44:16,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:44:16,027 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 13:44:16,055 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-1b.i[30416,30429] [2022-07-26 13:44:16,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:44:16,082 INFO L208 MainTranslator]: Completed translation [2022-07-26 13:44:16,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16 WrapperNode [2022-07-26 13:44:16,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 13:44:16,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 13:44:16,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 13:44:16,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 13:44:16,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,147 INFO L137 Inliner]: procedures = 171, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-07-26 13:44:16,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 13:44:16,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 13:44:16,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 13:44:16,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 13:44:16,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 13:44:16,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 13:44:16,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 13:44:16,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 13:44:16,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (1/1) ... [2022-07-26 13:44:16,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:44:16,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:44:16,232 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 13:44:16,235 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 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-07-26 13:44:16,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 13:44:16,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 13:44:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-07-26 13:44:16,292 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-07-26 13:44:16,292 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 13:44:16,398 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 13:44:16,399 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 13:44:16,550 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 13:44:16,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 13:44:16,574 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-26 13:44:16,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:44:16 BoogieIcfgContainer [2022-07-26 13:44:16,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 13:44:16,577 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 13:44:16,577 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 13:44:16,580 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 13:44:16,580 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:16,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 01:44:15" (1/3) ... [2022-07-26 13:44:16,581 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fb2febb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:44:16, skipping insertion in model container [2022-07-26 13:44:16,581 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:16,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:16" (2/3) ... [2022-07-26 13:44:16,582 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fb2febb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:44:16, skipping insertion in model container [2022-07-26 13:44:16,582 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:16,582 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:44:16" (3/3) ... [2022-07-26 13:44:16,583 INFO L322 chiAutomizerObserver]: Analyzing ICFG read_write_lock-1b.i [2022-07-26 13:44:16,664 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-26 13:44:16,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 112 transitions, 256 flow [2022-07-26 13:44:16,719 INFO L129 PetriNetUnfolder]: 2/104 cut-off events. [2022-07-26 13:44:16,720 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-26 13:44:16,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 104 events. 2/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2022-07-26 13:44:16,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 112 transitions, 256 flow [2022-07-26 13:44:16,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 104 transitions, 232 flow [2022-07-26 13:44:16,730 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-26 13:44:16,739 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 104 transitions, 232 flow [2022-07-26 13:44:16,744 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 104 transitions, 232 flow [2022-07-26 13:44:16,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 104 transitions, 232 flow [2022-07-26 13:44:16,758 INFO L129 PetriNetUnfolder]: 2/104 cut-off events. [2022-07-26 13:44:16,759 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-26 13:44:16,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 104 events. 2/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2022-07-26 13:44:16,763 INFO L116 LiptonReduction]: Number of co-enabled transitions 2088 [2022-07-26 13:44:19,193 INFO L131 LiptonReduction]: Checked pairs total: 6647 [2022-07-26 13:44:19,193 INFO L133 LiptonReduction]: Total number of compositions: 79 [2022-07-26 13:44:19,210 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 13:44:19,210 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 13:44:19,210 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 13:44:19,210 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 13:44:19,210 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 13:44:19,210 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 13:44:19,210 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 13:44:19,211 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 13:44:19,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 13:44:19,466 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-26 13:44:19,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-26 13:44:19,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 01:44:19 BoogieIcfgContainer [2022-07-26 13:44:19,470 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 13:44:19,470 INFO L158 Benchmark]: Toolchain (without parser) took 3735.38ms. Allocated memory is still 266.3MB. Free memory was 240.1MB in the beginning and 185.4MB in the end (delta: 54.8MB). Peak memory consumption was 54.9MB. Max. memory is 8.0GB. [2022-07-26 13:44:19,471 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 133.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 13:44:19,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.44ms. Allocated memory is still 266.3MB. Free memory was 240.1MB in the beginning and 228.3MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-07-26 13:44:19,488 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.03ms. Allocated memory is still 266.3MB. Free memory was 228.3MB in the beginning and 225.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-07-26 13:44:19,488 INFO L158 Benchmark]: Boogie Preprocessor took 23.39ms. Allocated memory is still 266.3MB. Free memory was 225.7MB in the beginning and 224.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-07-26 13:44:19,489 INFO L158 Benchmark]: RCFGBuilder took 404.14ms. Allocated memory is still 266.3MB. Free memory was 224.6MB in the beginning and 208.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-07-26 13:44:19,489 INFO L158 Benchmark]: BuchiAutomizer took 2892.86ms. Allocated memory is still 266.3MB. Free memory was 208.9MB in the beginning and 185.4MB in the end (delta: 23.6MB). Peak memory consumption was 24.6MB. Max. memory is 8.0GB. [2022-07-26 13:44:19,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 133.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 347.44ms. Allocated memory is still 266.3MB. Free memory was 240.1MB in the beginning and 228.3MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.03ms. Allocated memory is still 266.3MB. Free memory was 228.3MB in the beginning and 225.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.39ms. Allocated memory is still 266.3MB. Free memory was 225.7MB in the beginning and 224.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 404.14ms. Allocated memory is still 266.3MB. Free memory was 224.6MB in the beginning and 208.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * BuchiAutomizer took 2892.86ms. Allocated memory is still 266.3MB. Free memory was 208.9MB in the beginning and 185.4MB in the end (delta: 23.6MB). Peak memory consumption was 24.6MB. 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 2.7s 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: 2.5s - 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: 2.4s, 115 PlacesBefore, 46 PlacesAfterwards, 104 TransitionsBefore, 35 TransitionsAfterwards, 2088 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 79 TotalNumberOfCompositions, 6647 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3730, positive: 3545, positive conditional: 0, positive unconditional: 3545, negative: 185, negative conditional: 0, negative unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1645, positive: 1605, positive conditional: 0, positive unconditional: 1605, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1645, positive: 1558, positive conditional: 0, positive unconditional: 1558, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 87, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 79, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3730, positive: 1940, positive conditional: 0, positive unconditional: 1940, negative: 145, negative conditional: 0, negative unconditional: 145, unknown: 1645, unknown conditional: 0, unknown unconditional: 1645] , Statistics on independence cache: Total cache size (in pairs): 294, Positive cache size: 274, Positive conditional cache size: 0, Positive unconditional cache size: 274, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 RESULT: Ultimate proved your program to be correct! [2022-07-26 13:44:19,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...