/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/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 13:44:14,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 13:44:14,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 13:44:14,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-26 13:44:14,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-26 13:44:14,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-26 13:44:14,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-26 13:44:14,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-26 13:44:14,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-26 13:44:14,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-26 13:44:14,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-26 13:44:14,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-26 13:44:14,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-26 13:44:14,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-26 13:44:14,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-26 13:44:14,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-26 13:44:14,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-26 13:44:14,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-26 13:44:14,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-26 13:44:14,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-26 13:44:14,555 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-26 13:44:14,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-26 13:44:14,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-26 13:44:14,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-26 13:44:14,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-26 13:44:14,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-26 13:44:14,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-26 13:44:14,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-26 13:44:14,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-26 13:44:14,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-26 13:44:14,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-26 13:44:14,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-26 13:44:14,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-26 13:44:14,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-26 13:44:14,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-26 13:44:14,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-26 13:44:14,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-26 13:44:14,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-26 13:44:14,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-26 13:44:14,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-26 13:44:14,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-26 13:44:14,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-26 13:44:14,583 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 13:44:14,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 13:44:14,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 13:44:14,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 13:44:14,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 13:44:14,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 13:44:14,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 13:44:14,621 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 13:44:14,621 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 13:44:14,621 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 13:44:14,622 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 13:44:14,622 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 13:44:14,622 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 13:44:14,622 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 13:44:14,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 13:44:14,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 13:44:14,623 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 13:44:14,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 13:44:14,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 13:44:14,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 13:44:14,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 13:44:14,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 13:44:14,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 13:44:14,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 13:44:14,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 13:44:14,624 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 13:44:14,624 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 13:44:14,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 13:44:14,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 13:44:14,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 13:44:14,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 13:44:14,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 13:44:14,626 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 13:44:14,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 13:44:14,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 13:44:14,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 13:44:14,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 13:44:14,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 13:44:14,849 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 13:44:14,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-07-26 13:44:14,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba9402af1/1b1190490ec4454daddf3735e6d81e79/FLAG53506bd15 [2022-07-26 13:44:15,335 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 13:44:15,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-07-26 13:44:15,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba9402af1/1b1190490ec4454daddf3735e6d81e79/FLAG53506bd15 [2022-07-26 13:44:15,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba9402af1/1b1190490ec4454daddf3735e6d81e79 [2022-07-26 13:44:15,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 13:44:15,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 13:44:15,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 13:44:15,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 13:44:15,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 13:44:15,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:15,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285ce74a 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 13:44:15,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:15,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 13:44:15,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 13:44:15,640 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/gcd-2.i[938,951] [2022-07-26 13:44:15,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:44:15,829 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 13:44:15,840 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/gcd-2.i[938,951] [2022-07-26 13:44:15,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:44:15,933 INFO L208 MainTranslator]: Completed translation [2022-07-26 13:44:15,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15 WrapperNode [2022-07-26 13:44:15,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 13:44:15,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 13:44:15,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 13:44:15,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 13:44:15,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:15,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,012 INFO L137 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 122 [2022-07-26 13:44:16,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 13:44:16,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 13:44:16,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 13:44:16,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 13:44:16,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 13:44:16,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 13:44:16,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 13:44:16,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 13:44:16,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (1/1) ... [2022-07-26 13:44:16,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:44:16,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:44:16,105 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 13:44:16,132 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 13:44:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-26 13:44:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 13:44:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 13:44:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 13:44:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 13:44:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-07-26 13:44:16,148 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-07-26 13:44:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-07-26 13:44:16,148 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-07-26 13:44:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 13:44:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 13:44:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 13:44:16,151 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 13:44:16,291 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 13:44:16,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 13:44:16,504 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 13:44:16,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 13:44:16,539 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-26 13:44:16,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:44:16 BoogieIcfgContainer [2022-07-26 13:44:16,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 13:44:16,542 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 13:44:16,542 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 13:44:16,548 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 13:44:16,549 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:16,549 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 01:44:15" (1/3) ... [2022-07-26 13:44:16,550 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14b97ccf 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 13:44:16,550 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:16,550 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:15" (2/3) ... [2022-07-26 13:44:16,551 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14b97ccf 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 13:44:16,551 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:16,551 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 13:44:16,552 INFO L322 chiAutomizerObserver]: Analyzing ICFG gcd-2.i [2022-07-26 13:44:16,613 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-26 13:44:16,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 152 transitions, 320 flow [2022-07-26 13:44:16,682 INFO L129 PetriNetUnfolder]: 12/148 cut-off events. [2022-07-26 13:44:16,683 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-26 13:44:16,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 12/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2022-07-26 13:44:16,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 152 transitions, 320 flow [2022-07-26 13:44:16,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 148 transitions, 308 flow [2022-07-26 13:44:16,705 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-26 13:44:16,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 148 transitions, 308 flow [2022-07-26 13:44:16,725 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 148 transitions, 308 flow [2022-07-26 13:44:16,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 148 transitions, 308 flow [2022-07-26 13:44:16,771 INFO L129 PetriNetUnfolder]: 12/148 cut-off events. [2022-07-26 13:44:16,771 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-26 13:44:16,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 12/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2022-07-26 13:44:16,773 INFO L116 LiptonReduction]: Number of co-enabled transitions 308 [2022-07-26 13:44:34,028 WARN L233 SmtUtils]: Spent 12.30s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 277] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-26 13:44:34,221 INFO L131 LiptonReduction]: Checked pairs total: 692 [2022-07-26 13:44:34,221 INFO L133 LiptonReduction]: Total number of compositions: 172 [2022-07-26 13:44:34,238 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 13:44:34,238 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 13:44:34,239 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 13:44:34,239 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 13:44:34,239 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 13:44:34,239 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 13:44:34,239 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 13:44:34,239 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 13:44:34,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 13:44:34,286 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 32 [2022-07-26 13:44:34,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:44:34,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:44:34,291 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-26 13:44:34,291 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-26 13:44:34,292 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-26 13:44:34,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 51 states, but on-demand construction may add more states [2022-07-26 13:44:34,302 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 32 [2022-07-26 13:44:34,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:44:34,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:44:34,303 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-26 13:44:34,303 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-26 13:44:34,307 INFO L733 eck$LassoCheckResult]: Stem: 148#[ULTIMATE.startENTRY]don't care [570] ULTIMATE.startENTRY-->L729-2: Formula: (let ((.cse1 (select |v_#memory_int_In_1| 1)) (.cse0 (store |v_#valid_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2| 1))) (and (= v_~a~0_Out_6 |v_ULTIMATE.start_start_~a_in#1_Out_2|) (= (select |v_#valid_In_1| 1) 1) (= |v_ULTIMATE.start_start_#in~a_in#1_Out_2| |v_ULTIMATE.start_start_~a_in#1_Out_2|) (= |v_ULTIMATE.start_start_#in~b_in#1_Out_2| |v_ULTIMATE.start_start_~b_in#1_Out_2|) (not (= (ite (< 0 (mod |v_ULTIMATE.start_main_~a_in~0#1_Out_2| 4294967296)) 1 0) 0)) (= (select |v_#valid_In_1| 0) 0) (= 0 |v_#NULL.base_Out_2|) (= (store .cse0 |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2| 1) |v_#valid_Out_2|) (= |v_#length_Out_2| (store (store |v_#length_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2| 4) |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2| 4)) (= |v_#pthreadsForks_Out_2| (+ |v_#pthreadsForks_In_1| 1)) (= (select |v_#valid_In_1| 2) 1) (= (select .cse1 1) 0) (= 48 (select .cse1 0)) (= (select |v_#length_In_1| 2) 8) (= |v_#NULL.offset_Out_2| 0) (= (select |v_#valid_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|) 0) (= |v_#pthreadsForks_In_1| |v_ULTIMATE.start_start_#t~pre3#1_Out_2|) (= |v_ULTIMATE.start_main_~a_in~0#1_Out_2| |v_ULTIMATE.start_start_#in~a_in#1_Out_2|) (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_14| |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2|) (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_14| 0)) (= 0 (select .cse0 |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2|)) (= |v_ULTIMATE.start_start_~b_in#1_Out_2| v_~b~0_Out_6) (= (ite (< 0 (mod |v_ULTIMATE.start_main_~b_in~0#1_Out_2| 4294967296)) 1 0) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2|) (< |v_#StackHeapBarrier_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|) (= (select |v_#length_In_1| 1) 2) (< 0 |v_#StackHeapBarrier_In_1|) (= |v_ULTIMATE.start_start_~#t2~0#1.offset_Out_2| 0) (= |v_ULTIMATE.start_main_~b_in~0#1_Out_2| |v_ULTIMATE.start_start_#in~b_in#1_Out_2|) (= (store |v_#memory_int_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2| (store (select |v_#memory_int_In_1| |v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|) |v_ULTIMATE.start_start_~#t1~0#1.offset_Out_2| |v_ULTIMATE.start_start_#t~pre3#1_Out_2|)) |v_#memory_int_Out_2|) (= |v_ULTIMATE.start_start_~#t1~0#1.offset_Out_2| 0) (< |v_#StackHeapBarrier_In_1| |v_ULTIMATE.start_start_~#t2~0#1.base_Out_2|))) InVars {#memory_int=|v_#memory_int_In_1|, #StackHeapBarrier=|v_#StackHeapBarrier_In_1|, #length=|v_#length_In_1|, #pthreadsForks=|v_#pthreadsForks_In_1|, #valid=|v_#valid_In_1|} OutVars{ULTIMATE.start_start_~#t1~0#1.base=|v_ULTIMATE.start_start_~#t1~0#1.base_Out_2|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_Out_2|, #NULL.offset=|v_#NULL.offset_Out_2|, ULTIMATE.start_start_~#t2~0#1.offset=|v_ULTIMATE.start_start_~#t2~0#1.offset_Out_2|, ~a~0=v_~a~0_Out_6, ULTIMATE.start_start_~#t1~0#1.offset=|v_ULTIMATE.start_start_~#t1~0#1.offset_Out_2|, #pthreadsForks=|v_#pthreadsForks_Out_2|, ULTIMATE.start_start_~#t2~0#1.base=|v_ULTIMATE.start_start_~#t2~0#1.base_Out_2|, ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_Out_14|, ULTIMATE.start_start_#res#1=|v_ULTIMATE.start_start_#res#1_Out_2|, #length=|v_#length_Out_2|, ULTIMATE.start_start_#t~nondet6#1=|v_ULTIMATE.start_start_#t~nondet6#1_Out_2|, ULTIMATE.start_start_#t~mem8#1=|v_ULTIMATE.start_start_#t~mem8#1_Out_2|, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_Out_2|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_Out_6|, ULTIMATE.start_start_#in~b_in#1=|v_ULTIMATE.start_start_#in~b_in#1_Out_2|, ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_Out_2|, ULTIMATE.start_start_#in~a_in#1=|v_ULTIMATE.start_start_#in~a_in#1_Out_2|, ULTIMATE.start_start_~a_in#1=|v_ULTIMATE.start_start_~a_in#1_Out_2|, ULTIMATE.start_start_~b_in#1=|v_ULTIMATE.start_start_~b_in#1_Out_2|, #NULL.base=|v_#NULL.base_Out_2|, ULTIMATE.start_start_#t~pre5#1=|v_ULTIMATE.start_start_#t~pre5#1_Out_2|, ULTIMATE.start_start_#t~mem7#1=|v_ULTIMATE.start_start_#t~mem7#1_Out_2|, #StackHeapBarrier=|v_#StackHeapBarrier_In_1|, ULTIMATE.start_main_#t~nondet11#1=|v_ULTIMATE.start_main_#t~nondet11#1_Out_2|, ~b~0=v_~b~0_Out_6, #valid=|v_#valid_Out_2|, #memory_int=|v_#memory_int_Out_2|, ULTIMATE.start_main_#t~ret12#1=|v_ULTIMATE.start_main_#t~ret12#1_Out_6|, ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_Out_2|, ULTIMATE.start_start_#t~nondet4#1=|v_ULTIMATE.start_start_#t~nondet4#1_Out_2|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_Out_2|} AuxVars[] AssignedVars[ULTIMATE.start_start_~#t1~0#1.base, ULTIMATE.start_start_#t~pre3#1, #NULL.offset, ULTIMATE.start_start_~#t2~0#1.offset, ~a~0, ULTIMATE.start_start_~#t1~0#1.offset, #pthreadsForks, ULTIMATE.start_start_~#t2~0#1.base, ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_start_#res#1, #length, ULTIMATE.start_start_#t~nondet6#1, ULTIMATE.start_start_#t~mem8#1, ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_start_#in~b_in#1, ULTIMATE.start_main_~b_in~0#1, ULTIMATE.start_start_#in~a_in#1, ULTIMATE.start_start_~a_in#1, ULTIMATE.start_start_~b_in#1, #NULL.base, ULTIMATE.start_start_#t~pre5#1, ULTIMATE.start_start_#t~mem7#1, ULTIMATE.start_main_#t~nondet11#1, ~b~0, #valid, #memory_int, ULTIMATE.start_main_#t~ret12#1, ULTIMATE.start_main_~a_in~0#1, ULTIMATE.start_start_#t~nondet4#1, ULTIMATE.start_assume_abort_if_not_#in~cond#1] 151#[L729-2]don't care [396] L729-2-->dec_aENTRY: Formula: (and (= |v_dec_aThread1of1ForFork0_#in~arg#1.base_4| 0) (= |v_dec_aThread1of1ForFork0_#in~arg#1.offset_4| 0) (= v_dec_aThread1of1ForFork0_thidvar1_2 0) (= |v_ULTIMATE.start_start_#t~pre3#1_6| v_dec_aThread1of1ForFork0_thidvar0_2)) InVars {ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_6|} OutVars{dec_aThread1of1ForFork0_~arg#1.offset=|v_dec_aThread1of1ForFork0_~arg#1.offset_4|, dec_aThread1of1ForFork0_thidvar0=v_dec_aThread1of1ForFork0_thidvar0_2, dec_aThread1of1ForFork0_#in~arg#1.base=|v_dec_aThread1of1ForFork0_#in~arg#1.base_4|, dec_aThread1of1ForFork0_thidvar1=v_dec_aThread1of1ForFork0_thidvar1_2, dec_aThread1of1ForFork0_#res#1.offset=|v_dec_aThread1of1ForFork0_#res#1.offset_4|, dec_aThread1of1ForFork0_#in~arg#1.offset=|v_dec_aThread1of1ForFork0_#in~arg#1.offset_4|, dec_aThread1of1ForFork0_#res#1.base=|v_dec_aThread1of1ForFork0_#res#1.base_4|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_6|, dec_aThread1of1ForFork0_~arg#1.base=|v_dec_aThread1of1ForFork0_~arg#1.base_4|} AuxVars[] AssignedVars[dec_aThread1of1ForFork0_~arg#1.offset, dec_aThread1of1ForFork0_thidvar0, dec_aThread1of1ForFork0_#in~arg#1.base, dec_aThread1of1ForFork0_thidvar1, dec_aThread1of1ForFork0_#res#1.offset, dec_aThread1of1ForFork0_#in~arg#1.offset, dec_aThread1of1ForFork0_#res#1.base, dec_aThread1of1ForFork0_~arg#1.base] 153#[dec_aENTRY, L729-3]don't care [380] dec_aENTRY-->L711-1: Formula: (and (= |v_dec_aThread1of1ForFork0_#in~arg#1.offset_1| |v_dec_aThread1of1ForFork0_~arg#1.offset_1|) (= |v_dec_aThread1of1ForFork0_#in~arg#1.base_1| |v_dec_aThread1of1ForFork0_~arg#1.base_1|)) InVars {dec_aThread1of1ForFork0_#in~arg#1.base=|v_dec_aThread1of1ForFork0_#in~arg#1.base_1|, dec_aThread1of1ForFork0_#in~arg#1.offset=|v_dec_aThread1of1ForFork0_#in~arg#1.offset_1|} OutVars{dec_aThread1of1ForFork0_~arg#1.offset=|v_dec_aThread1of1ForFork0_~arg#1.offset_1|, dec_aThread1of1ForFork0_~arg#1.base=|v_dec_aThread1of1ForFork0_~arg#1.base_1|, dec_aThread1of1ForFork0_#in~arg#1.base=|v_dec_aThread1of1ForFork0_#in~arg#1.base_1|, dec_aThread1of1ForFork0_#in~arg#1.offset=|v_dec_aThread1of1ForFork0_#in~arg#1.offset_1|} AuxVars[] AssignedVars[dec_aThread1of1ForFork0_~arg#1.offset, dec_aThread1of1ForFork0_~arg#1.base] 157#[L711-1, L729-3]don't care [2022-07-26 13:44:34,308 INFO L735 eck$LassoCheckResult]: Loop: 157#[L711-1, L729-3]don't care [383] L711-1-->L711: Formula: (not (= (mod v_~a~0_3 4294967296) (mod v_~b~0_3 4294967296))) InVars {~a~0=v_~a~0_3, ~b~0=v_~b~0_3} OutVars{~a~0=v_~a~0_3, ~b~0=v_~b~0_3} AuxVars[] AssignedVars[] 165#[L711, L729-3]don't care [385] L711-->L711-1: Formula: (let ((.cse0 (< (mod v_~b~0_30 4294967296) (mod v_~a~0_30 4294967296)))) (or (and .cse0 (= v_~a~0_29 (+ v_~a~0_30 (* (- 1) v_~b~0_30)))) (and (not .cse0) (= v_~a~0_29 v_~a~0_30)))) InVars {~a~0=v_~a~0_30, ~b~0=v_~b~0_30} OutVars{~a~0=v_~a~0_29, ~b~0=v_~b~0_30} AuxVars[] AssignedVars[~a~0] 157#[L711-1, L729-3]don't care [2022-07-26 13:44:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:44:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash 590217, now seen corresponding path program 1 times [2022-07-26 13:44:34,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:44:34,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74016621] [2022-07-26 13:44:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:44:34,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:44:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:34,429 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:44:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:34,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:44:34,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:44:34,473 INFO L85 PathProgramCache]: Analyzing trace with hash 13219, now seen corresponding path program 1 times [2022-07-26 13:44:34,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:44:34,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160477189] [2022-07-26 13:44:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:44:34,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:44:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:34,488 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:44:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:34,497 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:44:34,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:44:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash 567210795, now seen corresponding path program 1 times [2022-07-26 13:44:34,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:44:34,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803050293] [2022-07-26 13:44:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:44:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:44:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:34,551 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:44:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:34,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:44:35,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 01:44:35 BoogieIcfgContainer [2022-07-26 13:44:35,196 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 13:44:35,197 INFO L158 Benchmark]: Toolchain (without parser) took 19835.04ms. Allocated memory was 191.9MB in the beginning and 270.5MB in the end (delta: 78.6MB). Free memory was 131.5MB in the beginning and 122.9MB in the end (delta: 8.6MB). Peak memory consumption was 88.1MB. Max. memory is 8.0GB. [2022-07-26 13:44:35,197 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 191.9MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 13:44:35,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.46ms. Allocated memory was 191.9MB in the beginning and 270.5MB in the end (delta: 78.6MB). Free memory was 131.3MB in the beginning and 230.2MB in the end (delta: -98.8MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-07-26 13:44:35,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.24ms. Allocated memory is still 270.5MB. Free memory was 229.6MB in the beginning and 227.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 13:44:35,199 INFO L158 Benchmark]: Boogie Preprocessor took 48.37ms. Allocated memory is still 270.5MB. Free memory was 227.5MB in the beginning and 226.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 13:44:35,200 INFO L158 Benchmark]: RCFGBuilder took 478.40ms. Allocated memory is still 270.5MB. Free memory was 226.0MB in the beginning and 208.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-07-26 13:44:35,200 INFO L158 Benchmark]: BuchiAutomizer took 18654.34ms. Allocated memory is still 270.5MB. Free memory was 208.7MB in the beginning and 122.9MB in the end (delta: 85.8MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. [2022-07-26 13:44:35,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 191.9MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 571.46ms. Allocated memory was 191.9MB in the beginning and 270.5MB in the end (delta: 78.6MB). Free memory was 131.3MB in the beginning and 230.2MB in the end (delta: -98.8MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.24ms. Allocated memory is still 270.5MB. Free memory was 229.6MB in the beginning and 227.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.37ms. Allocated memory is still 270.5MB. Free memory was 227.5MB in the beginning and 226.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 478.40ms. Allocated memory is still 270.5MB. Free memory was 226.0MB in the beginning and 208.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * BuchiAutomizer took 18654.34ms. Allocated memory is still 270.5MB. Free memory was 208.7MB in the beginning and 122.9MB in the end (delta: 85.8MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. 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: nont1 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: 17.6s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 709]: 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(a_in)=1, \old(b_in)=2, \old(cond)=1, \result=0, \result=0, \result={0:0}, a=1, a_in=1, a_in=1, arg={0:0}, arg={0:0}, b=2, b_in=2, b_in=2, cond=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@345783cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a85f0e9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d9d88b in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@608ef24b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77368fea in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@27199f77=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@5198e7be=0, t1={4:0}, t2={3:0}} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 709]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L695] 0 unsigned a, b; [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND TRUE 0 !cond [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in [L727] 0 b=b_in [L728] 0 pthread_t t1, t2; [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) Loop: [L709] COND TRUE a!=b [L711] CALL __VERIFIER_atomic_dec_a() [L698] COND TRUE a>b [L699] a=a-b [L711] RET __VERIFIER_atomic_dec_a() End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.5s, 143 PlacesBefore, 22 PlacesAfterwards, 148 TransitionsBefore, 17 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 8 FixpointIterations, 115 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 4 ConcurrentYvCompositions, 10 ChoiceCompositions, 172 TotalNumberOfCompositions, 692 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 469, positive: 433, positive conditional: 0, positive unconditional: 433, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 193, positive: 190, positive conditional: 0, positive unconditional: 190, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 193, positive: 187, positive conditional: 0, positive unconditional: 187, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 469, positive: 243, positive conditional: 0, positive unconditional: 243, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 193, unknown conditional: 0, unknown unconditional: 193] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 RESULT: Ultimate proved your program to be incorrect! [2022-07-26 13:44:35,255 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...