/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/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 13:56:39,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 13:56:39,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 13:56:39,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-26 13:56:39,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-26 13:56:39,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-26 13:56:39,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-26 13:56:39,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-26 13:56:39,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-26 13:56:39,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-26 13:56:39,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-26 13:56:39,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-26 13:56:39,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-26 13:56:39,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-26 13:56:39,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-26 13:56:39,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-26 13:56:39,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-26 13:56:39,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-26 13:56:39,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-26 13:56:39,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-26 13:56:39,400 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-26 13:56:39,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-26 13:56:39,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-26 13:56:39,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-26 13:56:39,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-26 13:56:39,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-07-26 13:56:39,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-26 13:56:39,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-26 13:56:39,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-26 13:56:39,411 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 13:56:39,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 13:56:39,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 13:56:39,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 13:56:39,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 13:56:39,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 13:56:39,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 13:56:39,426 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 13:56:39,426 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 13:56:39,426 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 13:56:39,426 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 13:56:39,426 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 13:56:39,426 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 13:56:39,426 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 13:56:39,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 13:56:39,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 13:56:39,428 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 13:56:39,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 13:56:39,428 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 13:56:39,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 13:56:39,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 13:56:39,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 13:56:39,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 13:56:39,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 13:56:39,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 13:56:39,429 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 13:56:39,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 13:56:39,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 13:56:39,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 13:56:39,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 13:56:39,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 13:56:39,605 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 13:56:39,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-07-26 13:56:39,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55af3d895/dfae7e06b18f4367a4476eda62282a07/FLAG9074286d1 [2022-07-26 13:56:40,014 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 13:56:40,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-07-26 13:56:40,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55af3d895/dfae7e06b18f4367a4476eda62282a07/FLAG9074286d1 [2022-07-26 13:56:40,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55af3d895/dfae7e06b18f4367a4476eda62282a07 [2022-07-26 13:56:40,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 13:56:40,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 13:56:40,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 13:56:40,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 13:56:40,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 13:56:40,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9127b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40, skipping insertion in model container [2022-07-26 13:56:40,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 13:56:40,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 13:56:40,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-07-26 13:56:40,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:56:40,659 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 13:56:40,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-07-26 13:56:40,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:56:40,683 INFO L208 MainTranslator]: Completed translation [2022-07-26 13:56:40,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40 WrapperNode [2022-07-26 13:56:40,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 13:56:40,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 13:56:40,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 13:56:40,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 13:56:40,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,707 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-07-26 13:56:40,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 13:56:40,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 13:56:40,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 13:56:40,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 13:56:40,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 13:56:40,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 13:56:40,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 13:56:40,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 13:56:40,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (1/1) ... [2022-07-26 13:56:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:40,753 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 13:56:40,778 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 13:56:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 13:56:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-26 13:56:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-26 13:56:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 13:56:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-26 13:56:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 13:56:40,811 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 13:56:40,862 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 13:56:40,863 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 13:56:41,019 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 13:56:41,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 13:56:41,060 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-26 13:56:41,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:56:41 BoogieIcfgContainer [2022-07-26 13:56:41,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 13:56:41,067 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 13:56:41,067 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 13:56:41,072 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 13:56:41,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:56:41,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 01:56:40" (1/3) ... [2022-07-26 13:56:41,077 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b4eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:56:41, skipping insertion in model container [2022-07-26 13:56:41,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:56:41,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:56:40" (2/3) ... [2022-07-26 13:56:41,077 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b4eb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:56:41, skipping insertion in model container [2022-07-26 13:56:41,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:56:41,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:56:41" (3/3) ... [2022-07-26 13:56:41,079 INFO L322 chiAutomizerObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-07-26 13:56:41,168 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-26 13:56:41,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 85 transitions, 186 flow [2022-07-26 13:56:41,252 INFO L129 PetriNetUnfolder]: 6/81 cut-off events. [2022-07-26 13:56:41,252 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-26 13:56:41,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 6/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-07-26 13:56:41,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 85 transitions, 186 flow [2022-07-26 13:56:41,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 81 transitions, 174 flow [2022-07-26 13:56:41,272 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-26 13:56:41,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 81 transitions, 174 flow [2022-07-26 13:56:41,294 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 81 transitions, 174 flow [2022-07-26 13:56:41,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 174 flow [2022-07-26 13:56:41,326 INFO L129 PetriNetUnfolder]: 6/81 cut-off events. [2022-07-26 13:56:41,326 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-26 13:56:41,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 6/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-07-26 13:56:41,328 INFO L116 LiptonReduction]: Number of co-enabled transitions 404 [2022-07-26 13:56:43,222 INFO L131 LiptonReduction]: Checked pairs total: 457 [2022-07-26 13:56:43,222 INFO L133 LiptonReduction]: Total number of compositions: 75 [2022-07-26 13:56:43,248 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 13:56:43,248 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 13:56:43,248 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 13:56:43,248 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 13:56:43,248 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 13:56:43,248 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 13:56:43,248 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 13:56:43,248 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 13:56:43,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 13:56:43,270 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 14 [2022-07-26 13:56:43,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:56:43,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:56:43,274 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-26 13:56:43,274 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-26 13:56:43,274 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-26 13:56:43,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 33 states, but on-demand construction may add more states [2022-07-26 13:56:43,277 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 14 [2022-07-26 13:56:43,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:56:43,277 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:56:43,277 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-26 13:56:43,277 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-26 13:56:43,282 INFO L733 eck$LassoCheckResult]: Stem: 87#[ULTIMATE.startENTRY]don't care [311] ULTIMATE.startENTRY-->L72-3: Formula: (let ((.cse0 (select |v_#memory_int_48| 1)) (.cse1 (store |v_#valid_93| |v_ULTIMATE.start_main_~#t1~0#1.base_49| 1))) (and (= |v_#NULL.offset_6| 0) (= (select |v_#valid_93| 1) 1) (= |v_#memory_int_47| (store |v_#memory_int_48| |v_ULTIMATE.start_main_~#t1~0#1.base_49| (store (select |v_#memory_int_48| |v_ULTIMATE.start_main_~#t1~0#1.base_49|) |v_ULTIMATE.start_main_~#t1~0#1.offset_41| |v_ULTIMATE.start_main_#t~pre7#1_29|))) (< |v_#StackHeapBarrier_20| |v_ULTIMATE.start_main_~#t2~0#1.base_49|) (= (select .cse0 0) 48) (= |v_#NULL.base_6| 0) (= (store (store |v_#length_62| |v_ULTIMATE.start_main_~#t1~0#1.base_49| 4) |v_ULTIMATE.start_main_~#t2~0#1.base_49| 4) |v_#length_61|) (= (select |v_#length_62| 2) 34) (= |v_ULTIMATE.start_main_~#t2~0#1.offset_39| 0) (= (select |v_#valid_93| 0) 0) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_59| 0)) (= (select |v_#valid_93| 2) 1) (= (ite (and (< 0 v_~M1~0_53) (< 0 v_~M2~0_51)) 1 0) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_43|) (= (store .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_49| 1) |v_#valid_92|) (= (select .cse0 1) 0) (= 2 (select |v_#length_62| 1)) (= |v_ULTIMATE.start_main_~#t1~0#1.offset_41| 0) (= (select .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_49|) 0) (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_59| |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_43|) (< |v_#StackHeapBarrier_20| |v_ULTIMATE.start_main_~#t1~0#1.base_49|) (= |v_#pthreadsForks_31| (+ |v_#pthreadsForks_32| 1)) (< 0 |v_#StackHeapBarrier_20|) (= (select |v_#valid_93| |v_ULTIMATE.start_main_~#t1~0#1.base_49|) 0) (= |v_ULTIMATE.start_main_#t~pre7#1_29| |v_#pthreadsForks_32|) (= v_~counter~0_67 0))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_20|, #pthreadsForks=|v_#pthreadsForks_32|, #valid=|v_#valid_93|, #memory_int=|v_#memory_int_48|, #length=|v_#length_62|} OutVars{ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_39|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_27|, #NULL.offset=|v_#NULL.offset_6|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_41|, ULTIMATE.start_main_#t~mem12#1=|v_ULTIMATE.start_main_#t~mem12#1_32|, #pthreadsForks=|v_#pthreadsForks_31|, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_59|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_26|, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_29|, #length=|v_#length_61|, ~M1~0=v_~M1~0_53, ~counter~0=v_~counter~0_67, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_19|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_36|, ULTIMATE.start_main_#t~nondet6#1=|v_ULTIMATE.start_main_#t~nondet6#1_26|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_49|, #NULL.base=|v_#NULL.base_6|, #StackHeapBarrier=|v_#StackHeapBarrier_20|, ~M2~0=v_~M2~0_51, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_19|, #valid=|v_#valid_92|, #memory_int=|v_#memory_int_47|, ULTIMATE.start_main_#t~mem11#1=|v_ULTIMATE.start_main_#t~mem11#1_24|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_49|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_43|} AuxVars[] AssignedVars[~counter~0, ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~pre9#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~nondet6#1, #NULL.offset, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_#t~mem12#1, #NULL.base, #pthreadsForks, ~M2~0, ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet8#1, #valid, #memory_int, ULTIMATE.start_main_#t~mem11#1, ULTIMATE.start_main_#t~pre7#1, #length, ~M1~0, ULTIMATE.start_main_~#t2~0#1.base, ULTIMATE.start_assume_abort_if_not_#in~cond#1] 90#[L72-3]don't care [231] L72-3-->thread1ENTRY: Formula: (and (= |v_ULTIMATE.start_main_#t~pre7#1_6| v_thread1Thread1of1ForFork0_thidvar0_2) (= v_thread1Thread1of1ForFork0_thidvar1_2 0)) InVars {ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_6|} OutVars{thread1Thread1of1ForFork0_#res.base=|v_thread1Thread1of1ForFork0_#res.base_4|, thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_8|, thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_4|, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_12, thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_#res.offset=|v_thread1Thread1of1ForFork0_#res.offset_4|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_2, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#res.base, thread1Thread1of1ForFork0_#t~post1, thread1Thread1of1ForFork0_#t~post2, thread1Thread1of1ForFork0_~i~0, thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_#res.offset, thread1Thread1of1ForFork0_thidvar1] 92#[L72-4, thread1ENTRY]don't care [212] thread1ENTRY-->L41-4: Formula: (= v_thread1Thread1of1ForFork0_~i~0_1 0) InVars {} OutVars{thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_1} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_~i~0] 94#[L72-4, L41-4]don't care [2022-07-26 13:56:43,283 INFO L735 eck$LassoCheckResult]: Loop: 94#[L72-4, L41-4]don't care [296] L41-4-->L41-4: Formula: (and (< v_thread1Thread1of1ForFork0_~i~0_28 v_~M1~0_35) (= (+ v_~counter~0_54 1) v_~counter~0_53) (= (+ v_thread1Thread1of1ForFork0_~i~0_28 1) v_thread1Thread1of1ForFork0_~i~0_27)) InVars {~counter~0=v_~counter~0_54, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_28, ~M1~0=v_~M1~0_35} OutVars{~counter~0=v_~counter~0_53, thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_17|, thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_9|, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_27, ~M1~0=v_~M1~0_35} AuxVars[] AssignedVars[~counter~0, thread1Thread1of1ForFork0_#t~post1, thread1Thread1of1ForFork0_#t~post2, thread1Thread1of1ForFork0_~i~0] 94#[L72-4, L41-4]don't care [2022-07-26 13:56:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash 336035, now seen corresponding path program 1 times [2022-07-26 13:56:43,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:43,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772027525] [2022-07-26 13:56:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:43,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,367 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash 327, now seen corresponding path program 1 times [2022-07-26 13:56:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:43,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352927827] [2022-07-26 13:56:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,397 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,401 INFO L85 PathProgramCache]: Analyzing trace with hash 10417381, now seen corresponding path program 1 times [2022-07-26 13:56:43,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:43,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779458032] [2022-07-26 13:56:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:43,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,414 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:43,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:43,451 INFO L210 LassoAnalysis]: Preferences: [2022-07-26 13:56:43,452 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-26 13:56:43,452 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-26 13:56:43,452 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-26 13:56:43,452 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-26 13:56:43,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,452 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-26 13:56:43,452 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-26 13:56:43,453 INFO L133 ssoRankerPreferences]: Filename of dumped script: popl20-nonblocking-cntr-alt.wvr.c_BEv2_Iteration1_Loop [2022-07-26 13:56:43,453 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-26 13:56:43,453 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-26 13:56:43,464 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,472 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,473 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,475 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,476 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,478 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,481 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,482 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,526 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-26 13:56:43,526 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-26 13:56:43,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:43,532 INFO L229 MonitoredProcess]: Starting monitored process 2 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 13:56:43,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-26 13:56:43,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-26 13:56:43,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-26 13:56:43,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:43,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:43,564 INFO L229 MonitoredProcess]: Starting monitored process 3 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 13:56:43,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-26 13:56:43,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-26 13:56:43,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-26 13:56:43,680 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-26 13:56:43,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:43,684 INFO L210 LassoAnalysis]: Preferences: [2022-07-26 13:56:43,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-26 13:56:43,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-26 13:56:43,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-26 13:56:43,685 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-26 13:56:43,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-26 13:56:43,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-26 13:56:43,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: popl20-nonblocking-cntr-alt.wvr.c_BEv2_Iteration1_Loop [2022-07-26 13:56:43,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-26 13:56:43,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-26 13:56:43,686 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,697 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,699 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,702 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,704 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,706 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,708 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,710 INFO L142 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-26 13:56:43,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-26 13:56:43,785 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-26 13:56:43,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:43,788 INFO L229 MonitoredProcess]: Starting monitored process 4 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 13:56:43,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-26 13:56:43,792 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-26 13:56:43,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-26 13:56:43,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-26 13:56:43,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-26 13:56:43,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-26 13:56:43,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-26 13:56:43,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-26 13:56:43,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-26 13:56:43,823 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-26 13:56:43,837 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-26 13:56:43,837 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-26 13:56:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:56:43,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:56:43,869 INFO L229 MonitoredProcess]: Starting monitored process 5 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 13:56:43,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-26 13:56:43,875 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-26 13:56:43,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-26 13:56:43,893 INFO L513 LassoAnalysis]: Proved termination. [2022-07-26 13:56:43,893 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~M1~0, thread1Thread1of1ForFork0_~i~0) = 1*~M1~0 - 1*thread1Thread1of1ForFork0_~i~0 Supporting invariants [] [2022-07-26 13:56:43,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:43,927 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-26 13:56:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-26 13:56:43,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-26 13:56:43,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-26 13:56:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-26 13:56:44,011 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-26 13:56:44,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-26 13:56:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-26 13:56:44,030 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-26 13:56:44,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 33 states, but on-demand construction may add more states Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-26 13:56:44,090 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 33 states, but on-demand construction may add more states. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Result 84 states and 231 transitions. Complement of second has 5 states. [2022-07-26 13:56:44,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-26 13:56:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-26 13:56:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-07-26 13:56:44,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 3 letters. Loop has 1 letters. [2022-07-26 13:56:44,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-26 13:56:44,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-26 13:56:44,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-26 13:56:44,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-26 13:56:44,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-26 13:56:44,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 231 transitions. [2022-07-26 13:56:44,104 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 8 [2022-07-26 13:56:44,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 49 states and 131 transitions. [2022-07-26 13:56:44,108 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2022-07-26 13:56:44,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2022-07-26 13:56:44,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 131 transitions. [2022-07-26 13:56:44,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-26 13:56:44,109 INFO L220 hiAutomatonCegarLoop]: Abstraction has 49 states and 131 transitions. [2022-07-26 13:56:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 131 transitions. [2022-07-26 13:56:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2022-07-26 13:56:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 2.8) internal successors, (112), 39 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-26 13:56:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 112 transitions. [2022-07-26 13:56:44,154 INFO L242 hiAutomatonCegarLoop]: Abstraction has 40 states and 112 transitions. [2022-07-26 13:56:44,154 INFO L426 stractBuchiCegarLoop]: Abstraction has 40 states and 112 transitions. [2022-07-26 13:56:44,154 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-26 13:56:44,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 112 transitions. [2022-07-26 13:56:44,156 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 8 [2022-07-26 13:56:44,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:56:44,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:56:44,157 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-26 13:56:44,157 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-26 13:56:44,157 INFO L733 eck$LassoCheckResult]: Stem: 271#[ULTIMATE.startENTRY]don't care [311] ULTIMATE.startENTRY-->L72-3: Formula: (let ((.cse0 (select |v_#memory_int_48| 1)) (.cse1 (store |v_#valid_93| |v_ULTIMATE.start_main_~#t1~0#1.base_49| 1))) (and (= |v_#NULL.offset_6| 0) (= (select |v_#valid_93| 1) 1) (= |v_#memory_int_47| (store |v_#memory_int_48| |v_ULTIMATE.start_main_~#t1~0#1.base_49| (store (select |v_#memory_int_48| |v_ULTIMATE.start_main_~#t1~0#1.base_49|) |v_ULTIMATE.start_main_~#t1~0#1.offset_41| |v_ULTIMATE.start_main_#t~pre7#1_29|))) (< |v_#StackHeapBarrier_20| |v_ULTIMATE.start_main_~#t2~0#1.base_49|) (= (select .cse0 0) 48) (= |v_#NULL.base_6| 0) (= (store (store |v_#length_62| |v_ULTIMATE.start_main_~#t1~0#1.base_49| 4) |v_ULTIMATE.start_main_~#t2~0#1.base_49| 4) |v_#length_61|) (= (select |v_#length_62| 2) 34) (= |v_ULTIMATE.start_main_~#t2~0#1.offset_39| 0) (= (select |v_#valid_93| 0) 0) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_59| 0)) (= (select |v_#valid_93| 2) 1) (= (ite (and (< 0 v_~M1~0_53) (< 0 v_~M2~0_51)) 1 0) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_43|) (= (store .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_49| 1) |v_#valid_92|) (= (select .cse0 1) 0) (= 2 (select |v_#length_62| 1)) (= |v_ULTIMATE.start_main_~#t1~0#1.offset_41| 0) (= (select .cse1 |v_ULTIMATE.start_main_~#t2~0#1.base_49|) 0) (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_59| |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_43|) (< |v_#StackHeapBarrier_20| |v_ULTIMATE.start_main_~#t1~0#1.base_49|) (= |v_#pthreadsForks_31| (+ |v_#pthreadsForks_32| 1)) (< 0 |v_#StackHeapBarrier_20|) (= (select |v_#valid_93| |v_ULTIMATE.start_main_~#t1~0#1.base_49|) 0) (= |v_ULTIMATE.start_main_#t~pre7#1_29| |v_#pthreadsForks_32|) (= v_~counter~0_67 0))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_20|, #pthreadsForks=|v_#pthreadsForks_32|, #valid=|v_#valid_93|, #memory_int=|v_#memory_int_48|, #length=|v_#length_62|} OutVars{ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_39|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_27|, #NULL.offset=|v_#NULL.offset_6|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_41|, ULTIMATE.start_main_#t~mem12#1=|v_ULTIMATE.start_main_#t~mem12#1_32|, #pthreadsForks=|v_#pthreadsForks_31|, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_59|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_26|, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_29|, #length=|v_#length_61|, ~M1~0=v_~M1~0_53, ~counter~0=v_~counter~0_67, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_19|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_36|, ULTIMATE.start_main_#t~nondet6#1=|v_ULTIMATE.start_main_#t~nondet6#1_26|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_49|, #NULL.base=|v_#NULL.base_6|, #StackHeapBarrier=|v_#StackHeapBarrier_20|, ~M2~0=v_~M2~0_51, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_19|, #valid=|v_#valid_92|, #memory_int=|v_#memory_int_47|, ULTIMATE.start_main_#t~mem11#1=|v_ULTIMATE.start_main_#t~mem11#1_24|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_49|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_43|} AuxVars[] AssignedVars[~counter~0, ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~pre9#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~nondet6#1, #NULL.offset, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_#t~mem12#1, #NULL.base, #pthreadsForks, ~M2~0, ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet8#1, #valid, #memory_int, ULTIMATE.start_main_#t~mem11#1, ULTIMATE.start_main_#t~pre7#1, #length, ~M1~0, ULTIMATE.start_main_~#t2~0#1.base, ULTIMATE.start_assume_abort_if_not_#in~cond#1] 273#[L72-3]don't care [231] L72-3-->thread1ENTRY: Formula: (and (= |v_ULTIMATE.start_main_#t~pre7#1_6| v_thread1Thread1of1ForFork0_thidvar0_2) (= v_thread1Thread1of1ForFork0_thidvar1_2 0)) InVars {ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_6|} OutVars{thread1Thread1of1ForFork0_#res.base=|v_thread1Thread1of1ForFork0_#res.base_4|, thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_8|, thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_4|, thread1Thread1of1ForFork0_~i~0=v_thread1Thread1of1ForFork0_~i~0_12, thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2, thread1Thread1of1ForFork0_#res.offset=|v_thread1Thread1of1ForFork0_#res.offset_4|, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_2, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_6|} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#res.base, thread1Thread1of1ForFork0_#t~post1, thread1Thread1of1ForFork0_#t~post2, thread1Thread1of1ForFork0_~i~0, thread1Thread1of1ForFork0_thidvar0, thread1Thread1of1ForFork0_#res.offset, thread1Thread1of1ForFork0_thidvar1] 275#[L72-4, thread1ENTRY]don't care [300] L72-4-->L73-3: Formula: (and (= |v_ULTIMATE.start_main_#t~pre9#1_19| |v_#pthreadsForks_24|) (<= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_27|) (<= (+ |v_ULTIMATE.start_main_~#t2~0#1.offset_27| 4) (select |v_#length_45| |v_ULTIMATE.start_main_~#t2~0#1.base_33|)) (= (select |v_#valid_68| |v_ULTIMATE.start_main_~#t2~0#1.base_33|) 1) (= (store |v_#memory_int_36| |v_ULTIMATE.start_main_~#t2~0#1.base_33| (store (select |v_#memory_int_36| |v_ULTIMATE.start_main_~#t2~0#1.base_33|) |v_ULTIMATE.start_main_~#t2~0#1.offset_27| |v_ULTIMATE.start_main_#t~pre9#1_19|)) |v_#memory_int_35|) (= |v_#pthreadsForks_23| (+ |v_#pthreadsForks_24| 1))) InVars {#pthreadsForks=|v_#pthreadsForks_24|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_27|, #valid=|v_#valid_68|, #memory_int=|v_#memory_int_36|, #length=|v_#length_45|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_33|} OutVars{#pthreadsForks=|v_#pthreadsForks_23|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_19|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_27|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_11|, #valid=|v_#valid_68|, #memory_int=|v_#memory_int_35|, #length=|v_#length_45|, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_19|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_33|} AuxVars[] AssignedVars[#pthreadsForks, ULTIMATE.start_main_#t~pre9#1, ULTIMATE.start_main_#t~nondet8#1, #memory_int, ULTIMATE.start_main_#t~pre7#1] 279#[L73-3, thread1ENTRY]don't care [234] L73-3-->thread2ENTRY: Formula: (and (= 0 v_thread2Thread1of1ForFork1_thidvar1_2) (= |v_ULTIMATE.start_main_#t~pre9#1_6| v_thread2Thread1of1ForFork1_thidvar0_2) (= 0 v_thread2Thread1of1ForFork1_thidvar2_2)) InVars {ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_6|} OutVars{thread2Thread1of1ForFork1_#res.offset=|v_thread2Thread1of1ForFork1_#res.offset_4|, thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_12, thread2Thread1of1ForFork1_#t~post4=|v_thread2Thread1of1ForFork1_#t~post4_6|, thread2Thread1of1ForFork1_#t~post3=|v_thread2Thread1of1ForFork1_#t~post3_6|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_6|, thread2Thread1of1ForFork1_#res.base=|v_thread2Thread1of1ForFork1_#res.base_4|, thread2Thread1of1ForFork1_thidvar2=v_thread2Thread1of1ForFork1_thidvar2_2, thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#res.offset, thread2Thread1of1ForFork1_~i~1, thread2Thread1of1ForFork1_#t~post4, thread2Thread1of1ForFork1_#t~post3, thread2Thread1of1ForFork1_#res.base, thread2Thread1of1ForFork1_thidvar2, thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 289#[thread2ENTRY, thread1ENTRY, L73-4]don't care [222] thread2ENTRY-->L54-1: Formula: (= v_thread2Thread1of1ForFork1_~i~1_1 0) InVars {} OutVars{thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_1} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_~i~1] 281#[L54-1, thread1ENTRY, L73-4]don't care [2022-07-26 13:56:44,158 INFO L735 eck$LassoCheckResult]: Loop: 281#[L54-1, thread1ENTRY, L73-4]don't care [244] L54-1-->L54-1: Formula: (and (< v_thread2Thread1of1ForFork1_~i~1_14 v_~M2~0_9) (let ((.cse0 (< 0 v_~counter~0_34))) (or (and (= v_~counter~0_34 v_~counter~0_33) (= |v_thread2Thread1of1ForFork1_#t~post3_8| |v_thread2Thread1of1ForFork1_#t~post3_7|) (= v_thread2Thread1of1ForFork1_~i~1_14 v_thread2Thread1of1ForFork1_~i~1_13) (not .cse0) (= |v_thread2Thread1of1ForFork1_#t~post4_8| |v_thread2Thread1of1ForFork1_#t~post4_7|)) (and (= v_thread2Thread1of1ForFork1_~i~1_13 (+ v_thread2Thread1of1ForFork1_~i~1_14 1)) (= (+ v_~counter~0_33 1) v_~counter~0_34) .cse0)))) InVars {~counter~0=v_~counter~0_34, thread2Thread1of1ForFork1_#t~post4=|v_thread2Thread1of1ForFork1_#t~post4_8|, thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_14, thread2Thread1of1ForFork1_#t~post3=|v_thread2Thread1of1ForFork1_#t~post3_8|, ~M2~0=v_~M2~0_9} OutVars{~counter~0=v_~counter~0_33, thread2Thread1of1ForFork1_#t~post4=|v_thread2Thread1of1ForFork1_#t~post4_7|, thread2Thread1of1ForFork1_~i~1=v_thread2Thread1of1ForFork1_~i~1_13, thread2Thread1of1ForFork1_#t~post3=|v_thread2Thread1of1ForFork1_#t~post3_7|, ~M2~0=v_~M2~0_9} AuxVars[] AssignedVars[~counter~0, thread2Thread1of1ForFork1_#t~post4, thread2Thread1of1ForFork1_~i~1, thread2Thread1of1ForFork1_#t~post3] 281#[L54-1, thread1ENTRY, L73-4]don't care [2022-07-26 13:56:44,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash 323021679, now seen corresponding path program 1 times [2022-07-26 13:56:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:44,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896720690] [2022-07-26 13:56:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:44,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-26 13:56:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:44,197 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:44,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash 275, now seen corresponding path program 1 times [2022-07-26 13:56:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:44,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942369622] [2022-07-26 13:56:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:44,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:44,216 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:44,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:56:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1423737701, now seen corresponding path program 1 times [2022-07-26 13:56:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:56:44,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976569248] [2022-07-26 13:56:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:56:44,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:56:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:44,250 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:56:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:56:44,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:56:44,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 01:56:44 BoogieIcfgContainer [2022-07-26 13:56:44,935 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 13:56:44,938 INFO L158 Benchmark]: Toolchain (without parser) took 4458.21ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 175.0MB in the beginning and 191.3MB in the end (delta: -16.3MB). Peak memory consumption was 30.5MB. Max. memory is 8.0GB. [2022-07-26 13:56:44,938 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 226.5MB. Free memory is still 191.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 13:56:44,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.72ms. Allocated memory is still 226.5MB. Free memory was 174.8MB in the beginning and 201.4MB in the end (delta: -26.6MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. [2022-07-26 13:56:44,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.05ms. Allocated memory is still 226.5MB. Free memory was 201.4MB in the beginning and 199.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 13:56:44,941 INFO L158 Benchmark]: Boogie Preprocessor took 15.29ms. Allocated memory is still 226.5MB. Free memory was 199.9MB in the beginning and 198.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-07-26 13:56:44,941 INFO L158 Benchmark]: RCFGBuilder took 338.23ms. Allocated memory is still 226.5MB. Free memory was 198.7MB in the beginning and 185.2MB in the end (delta: 13.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-07-26 13:56:44,943 INFO L158 Benchmark]: BuchiAutomizer took 3867.63ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 185.2MB in the beginning and 191.3MB in the end (delta: -6.0MB). Peak memory consumption was 41.5MB. Max. memory is 8.0GB. [2022-07-26 13:56:44,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 226.5MB. Free memory is still 191.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.72ms. Allocated memory is still 226.5MB. Free memory was 174.8MB in the beginning and 201.4MB in the end (delta: -26.6MB). Peak memory consumption was 6.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.05ms. Allocated memory is still 226.5MB. Free memory was 201.4MB in the beginning and 199.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.29ms. Allocated memory is still 226.5MB. Free memory was 199.9MB in the beginning and 198.8MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 338.23ms. Allocated memory is still 226.5MB. Free memory was 198.7MB in the beginning and 185.2MB in the end (delta: 13.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * BuchiAutomizer took 3867.63ms. Allocated memory was 226.5MB in the beginning and 272.6MB in the end (delta: 46.1MB). Free memory was 185.2MB in the beginning and 191.3MB in the end (delta: -6.0MB). Peak memory consumption was 41.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + M1 and consists of 4 locations. The remainder module has 40 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 3 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax259 hnf100 lsp25 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 106ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 2.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 52]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\old(cond)=1, \result={0:0}, \result={0:0}, \result=0, cond=1, counter=0, i=0, i=0, M1=1, M2=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c7fd893 in24066,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@390bcbf4 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61e6c2a2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f29169d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@14b173f8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@3ab5376e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3d207b6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@60fa371d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@72f6c163=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7ba5a3ed=0, t1={4162:0}, t2={3:0}} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 52]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L38] 0 int M1, M2, counter; [L65] 0 pthread_t t1, t2; [L67] 0 M1 = __VERIFIER_nondet_int() [L68] 0 M2 = __VERIFIER_nondet_int() [L69] CALL 0 assume_abort_if_not(M1 > 0 && M2 > 0) [L35] COND FALSE 0 !(!cond) [L69] RET 0 assume_abort_if_not(M1 > 0 && M2 > 0) [L72] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L73] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L51] 2 int i = 0; Loop: [L52] COND TRUE i < M2 [L54] COND FALSE !(counter > 0) End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 82 PlacesBefore, 20 PlacesAfterwards, 81 TransitionsBefore, 15 TransitionsAfterwards, 404 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 75 TotalNumberOfCompositions, 457 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 454, positive: 453, positive conditional: 0, positive unconditional: 453, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 276, positive: 275, positive conditional: 0, positive unconditional: 275, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 276, positive: 275, positive conditional: 0, positive unconditional: 275, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 454, positive: 178, positive conditional: 0, positive unconditional: 178, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 276, unknown conditional: 0, unknown unconditional: 276] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 RESULT: Ultimate proved your program to be incorrect! [2022-07-26 13:56:45,015 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...