/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-noLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 13:22:10,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 13:22:10,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 13:22:10,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-26 13:22:10,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-26 13:22:10,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-26 13:22:10,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-26 13:22:10,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2022-07-26 13:22:10,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 13:22:10,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 13:22:10,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 13:22:10,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 13:22:10,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 13:22:10,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 13:22:10,975 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 13:22:10,975 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 13:22:10,975 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 13:22:10,975 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 13:22:10,976 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 13:22:10,976 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 13:22:10,976 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 13:22:10,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 13:22:10,976 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 13:22:10,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 13:22:10,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 13:22:10,978 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 13:22:10,978 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 13:22:10,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 13:22:10,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 13:22:10,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 13:22:10,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 13:22:10,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 13:22:10,979 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-26 13:22:10,980 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 13:22:10,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 13:22:11,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 13:22:11,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 13:22:11,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 13:22:11,241 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 13:22:11,241 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 13:22:11,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-07-26 13:22:11,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b388191f/fe9a3d1eb2e842d388079f979b080af8/FLAG8435891dd [2022-07-26 13:22:11,737 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 13:22:11,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-07-26 13:22:11,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b388191f/fe9a3d1eb2e842d388079f979b080af8/FLAG8435891dd [2022-07-26 13:22:11,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b388191f/fe9a3d1eb2e842d388079f979b080af8 [2022-07-26 13:22:11,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 13:22:11,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 13:22:11,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 13:22:11,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 13:22:11,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 13:22:11,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:22:11" (1/1) ... [2022-07-26 13:22:11,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4834d74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:11, skipping insertion in model container [2022-07-26 13:22:11,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:22:11" (1/1) ... [2022-07-26 13:22:11,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 13:22:11,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 13:22:12,029 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 13:22:12,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:22:12,216 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 13:22:12,229 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 13:22:12,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:22:12,305 INFO L208 MainTranslator]: Completed translation [2022-07-26 13:22:12,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12 WrapperNode [2022-07-26 13:22:12,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 13:22:12,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 13:22:12,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 13:22:12,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 13:22:12,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,365 INFO L137 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 122 [2022-07-26 13:22:12,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 13:22:12,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 13:22:12,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 13:22:12,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 13:22:12,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 13:22:12,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 13:22:12,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 13:22:12,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 13:22:12,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:22:12,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:22:12,461 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 13:22:12,512 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 13:22:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-26 13:22:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 13:22:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 13:22:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 13:22:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 13:22:12,527 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-07-26 13:22:12,527 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-07-26 13:22:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-07-26 13:22:12,528 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-07-26 13:22:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 13:22:12,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 13:22:12,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 13:22:12,529 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 13:22:12,687 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 13:22:12,689 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 13:22:12,909 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 13:22:12,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 13:22:12,945 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-26 13:22:12,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:22:12 BoogieIcfgContainer [2022-07-26 13:22:12,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 13:22:12,949 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 13:22:12,949 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 13:22:12,953 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 13:22:12,953 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:22:12,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 01:22:11" (1/3) ... [2022-07-26 13:22:12,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72646b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:22:12, skipping insertion in model container [2022-07-26 13:22:12,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:22:12,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (2/3) ... [2022-07-26 13:22:12,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72646b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:22:12, skipping insertion in model container [2022-07-26 13:22:12,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:22:12,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:22:12" (3/3) ... [2022-07-26 13:22:12,956 INFO L322 chiAutomizerObserver]: Analyzing ICFG gcd-2.i [2022-07-26 13:22:13,030 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-26 13:22:13,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 152 transitions, 320 flow [2022-07-26 13:22:13,176 INFO L129 PetriNetUnfolder]: 12/148 cut-off events. [2022-07-26 13:22:13,176 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-26 13:22:13,195 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 13:22:13,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 152 transitions, 320 flow [2022-07-26 13:22:13,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 148 transitions, 308 flow [2022-07-26 13:22:13,221 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 13:22:13,221 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 13:22:13,221 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 13:22:13,221 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 13:22:13,221 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 13:22:13,222 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 13:22:13,222 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 13:22:13,222 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 13:22:13,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 13:22:13,314 INFO L131 ngComponentsAnalysis]: Automaton has 45 accepting balls. 98 [2022-07-26 13:22:13,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:22:13,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:22:13,321 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-26 13:22:13,321 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-26 13:22:13,321 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-26 13:22:13,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 311 states, but on-demand construction may add more states [2022-07-26 13:22:13,337 INFO L131 ngComponentsAnalysis]: Automaton has 45 accepting balls. 98 [2022-07-26 13:22:13,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:22:13,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:22:13,339 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-26 13:22:13,339 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-26 13:22:13,346 INFO L733 eck$LassoCheckResult]: Stem: 148#[ULTIMATE.startENTRY]don't care [358] ULTIMATE.startENTRY-->L-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 151#[L-1]don't care [277] L-1-->L-1-1: Formula: (and (= |v_#NULL.base_1| 0) (= |v_#NULL.offset_1| 0)) InVars {} OutVars{#NULL.offset=|v_#NULL.offset_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] 153#[L-1-1]don't care [367] L-1-1-->L-1-2: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 155#[L-1-2]don't care [373] L-1-2-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 157#[L12]don't care [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 159#[L12-1]don't care [336] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 161#[L12-2]don't care [334] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 163#[L12-3]don't care [359] L12-3-->L12-4: Formula: (and (= 8 (select |v_#length_2| 2)) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 165#[L12-4]don't care [347] L12-4-->L695: Formula: (= v_~a~0_12 0) InVars {} OutVars{~a~0=v_~a~0_12} AuxVars[] AssignedVars[~a~0] 167#[L695]don't care [374] L695-->L-1-3: Formula: (= v_~b~0_12 0) InVars {} OutVars{~b~0=v_~b~0_12} AuxVars[] AssignedVars[~b~0] 169#[L-1-3]don't care [376] L-1-3-->L-1-4: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 171#[L-1-4]don't care [285] L-1-4-->L-1-5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 173#[L-1-5]don't care [250] L-1-5-->L-1-6: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 175#[L-1-6]don't care [345] L-1-6-->L747: Formula: true InVars {} OutVars{ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_1|, ULTIMATE.start_main_#t~nondet11#1=|v_ULTIMATE.start_main_#t~nondet11#1_1|, ULTIMATE.start_main_#t~ret12#1=|v_ULTIMATE.start_main_#t~ret12#1_1|, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_1|, ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet11#1, ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_~b_in~0#1, ULTIMATE.start_main_#t~ret12#1, ULTIMATE.start_main_~a_in~0#1] 177#[L747]don't care [245] L747-->L747-1: Formula: (= |v_ULTIMATE.start_main_~a_in~0#1_2| |v_ULTIMATE.start_main_#t~nondet10#1_2|) InVars {ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_2|} OutVars{ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_2|, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~a_in~0#1] 179#[L747-1]don't care [289] L747-1-->L748: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet10#1] 181#[L748]don't care [275] L748-->L748-1: Formula: (= |v_ULTIMATE.start_main_~b_in~0#1_2| |v_ULTIMATE.start_main_#t~nondet11#1_2|) InVars {ULTIMATE.start_main_#t~nondet11#1=|v_ULTIMATE.start_main_#t~nondet11#1_2|} OutVars{ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_2|, ULTIMATE.start_main_#t~nondet11#1=|v_ULTIMATE.start_main_#t~nondet11#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~b_in~0#1] 183#[L748-1]don't care [253] L748-1-->L749: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet11#1=|v_ULTIMATE.start_main_#t~nondet11#1_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet11#1] 185#[L749]don't care [237] L749-->L749-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 187#[L749-1]don't care [292] L749-1-->L749-2: Formula: (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_1| (ite (< 0 (mod |v_ULTIMATE.start_main_~a_in~0#1_3| 4294967296)) 1 0)) InVars {ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_3|} OutVars{ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_3|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_#in~cond#1] 189#[L749-2]don't care [364] L749-2-->L14: Formula: true InVars {} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1] 191#[L14]don't care [365] L14-->L15: Formula: (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_2| |v_ULTIMATE.start_assume_abort_if_not_~cond#1_2|) InVars {ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_2|} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_2|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1] 193#[L15]don't care [301] L15-->L14-1: Formula: (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_4| 0)) InVars {ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_4|} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_4|} AuxVars[] AssignedVars[] 197#[L14-1]don't care [251] L14-1-->L750: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 199#[L750]don't care [338] L750-->L750-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 201#[L750-1]don't care [368] L750-1-->L750-2: Formula: (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_3| (ite (< 0 (mod |v_ULTIMATE.start_main_~b_in~0#1_3| 4294967296)) 1 0)) InVars {ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_3|} OutVars{ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_3|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_3|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_#in~cond#1] 203#[L750-2]don't care [293] L750-2-->L14-2: Formula: true InVars {} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1] 205#[L14-2]don't care [319] L14-2-->L15-3: Formula: (= |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_4| |v_ULTIMATE.start_assume_abort_if_not_~cond#1_6|) InVars {ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_4|} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_6|, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_4|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1] 207#[L15-3]don't care [340] L15-3-->L14-3: Formula: (not (= |v_ULTIMATE.start_assume_abort_if_not_~cond#1_8| 0)) InVars {ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_8|} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_8|} AuxVars[] AssignedVars[] 211#[L14-3]don't care [263] L14-3-->L751: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 213#[L751]don't care [259] L751-->L751-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 215#[L751-1]don't care [239] L751-1-->L751-2: Formula: (and (= |v_ULTIMATE.start_start_#in~a_in#1_1| |v_ULTIMATE.start_main_~a_in~0#1_4|) (= |v_ULTIMATE.start_main_~b_in~0#1_4| |v_ULTIMATE.start_start_#in~b_in#1_1|)) InVars {ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_4|, ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_4|} OutVars{ULTIMATE.start_start_#in~b_in#1=|v_ULTIMATE.start_start_#in~b_in#1_1|, ULTIMATE.start_main_~b_in~0#1=|v_ULTIMATE.start_main_~b_in~0#1_4|, ULTIMATE.start_start_#in~a_in#1=|v_ULTIMATE.start_start_#in~a_in#1_1|, ULTIMATE.start_main_~a_in~0#1=|v_ULTIMATE.start_main_~a_in~0#1_4|} AuxVars[] AssignedVars[ULTIMATE.start_start_#in~b_in#1, ULTIMATE.start_start_#in~a_in#1] 217#[L751-2]don't care [240] L751-2-->L751-3: Formula: true InVars {} OutVars{ULTIMATE.start_start_#res#1=|v_ULTIMATE.start_start_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_start_#res#1] 219#[L751-3]don't care [291] L751-3-->L724: Formula: true InVars {} OutVars{ULTIMATE.start_start_~#t1~0#1.base=|v_ULTIMATE.start_start_~#t1~0#1.base_1|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_1|, ULTIMATE.start_start_~a_in#1=|v_ULTIMATE.start_start_~a_in#1_1|, ULTIMATE.start_start_~b_in#1=|v_ULTIMATE.start_start_~b_in#1_1|, ULTIMATE.start_start_#t~pre5#1=|v_ULTIMATE.start_start_#t~pre5#1_1|, ULTIMATE.start_start_#t~mem7#1=|v_ULTIMATE.start_start_#t~mem7#1_1|, ULTIMATE.start_start_~#t2~0#1.offset=|v_ULTIMATE.start_start_~#t2~0#1.offset_1|, ULTIMATE.start_start_~#t1~0#1.offset=|v_ULTIMATE.start_start_~#t1~0#1.offset_1|, ULTIMATE.start_start_~#t2~0#1.base=|v_ULTIMATE.start_start_~#t2~0#1.base_1|, ULTIMATE.start_start_#t~nondet6#1=|v_ULTIMATE.start_start_#t~nondet6#1_1|, ULTIMATE.start_start_#t~mem8#1=|v_ULTIMATE.start_start_#t~mem8#1_1|, ULTIMATE.start_start_#t~nondet4#1=|v_ULTIMATE.start_start_#t~nondet4#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_start_#t~mem7#1, ULTIMATE.start_start_~#t2~0#1.offset, ULTIMATE.start_start_~#t1~0#1.offset, ULTIMATE.start_start_~#t2~0#1.base, ULTIMATE.start_start_~#t1~0#1.base, ULTIMATE.start_start_#t~pre3#1, ULTIMATE.start_start_~a_in#1, ULTIMATE.start_start_#t~nondet6#1, ULTIMATE.start_start_#t~mem8#1, ULTIMATE.start_start_~b_in#1, ULTIMATE.start_start_#t~nondet4#1, ULTIMATE.start_start_#t~pre5#1] 221#[L724]don't care [257] L724-->L724-1: Formula: (= |v_ULTIMATE.start_start_#in~a_in#1_2| |v_ULTIMATE.start_start_~a_in#1_2|) InVars {ULTIMATE.start_start_#in~a_in#1=|v_ULTIMATE.start_start_#in~a_in#1_2|} OutVars{ULTIMATE.start_start_~a_in#1=|v_ULTIMATE.start_start_~a_in#1_2|, ULTIMATE.start_start_#in~a_in#1=|v_ULTIMATE.start_start_#in~a_in#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_start_~a_in#1] 223#[L724-1]don't care [296] L724-1-->L726: Formula: (= |v_ULTIMATE.start_start_#in~b_in#1_2| |v_ULTIMATE.start_start_~b_in#1_2|) InVars {ULTIMATE.start_start_#in~b_in#1=|v_ULTIMATE.start_start_#in~b_in#1_2|} OutVars{ULTIMATE.start_start_#in~b_in#1=|v_ULTIMATE.start_start_#in~b_in#1_2|, ULTIMATE.start_start_~b_in#1=|v_ULTIMATE.start_start_~b_in#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_start_~b_in#1] 225#[L726]don't care [323] L726-->L727: Formula: (= v_~a~0_13 |v_ULTIMATE.start_start_~a_in#1_3|) InVars {ULTIMATE.start_start_~a_in#1=|v_ULTIMATE.start_start_~a_in#1_3|} OutVars{ULTIMATE.start_start_~a_in#1=|v_ULTIMATE.start_start_~a_in#1_3|, ~a~0=v_~a~0_13} AuxVars[] AssignedVars[~a~0] 227#[L727]don't care [247] L727-->L728: Formula: (= v_~b~0_13 |v_ULTIMATE.start_start_~b_in#1_3|) InVars {ULTIMATE.start_start_~b_in#1=|v_ULTIMATE.start_start_~b_in#1_3|} OutVars{~b~0=v_~b~0_13, ULTIMATE.start_start_~b_in#1=|v_ULTIMATE.start_start_~b_in#1_3|} AuxVars[] AssignedVars[~b~0] 229#[L728]don't care [308] L728-->L728-1: Formula: (and (= (select |v_#valid_5| |v_ULTIMATE.start_start_~#t1~0#1.base_2|) 0) (= |v_ULTIMATE.start_start_~#t1~0#1.offset_2| 0) (not (= |v_ULTIMATE.start_start_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_start_~#t1~0#1.base_2| 1) |v_#valid_4|) (= (store |v_#length_4| |v_ULTIMATE.start_start_~#t1~0#1.base_2| 4) |v_#length_3|) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_start_~#t1~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{ULTIMATE.start_start_~#t1~0#1.offset=|v_ULTIMATE.start_start_~#t1~0#1.offset_2|, #StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_start_~#t1~0#1.base=|v_ULTIMATE.start_start_~#t1~0#1.base_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[ULTIMATE.start_start_~#t1~0#1.offset, ULTIMATE.start_start_~#t1~0#1.base, #valid, #length] 231#[L728-1]don't care [295] L728-1-->L728-2: Formula: (and (= |v_ULTIMATE.start_start_~#t2~0#1.offset_2| 0) (= (store |v_#valid_7| |v_ULTIMATE.start_start_~#t2~0#1.base_2| 1) |v_#valid_6|) (= (select |v_#valid_7| |v_ULTIMATE.start_start_~#t2~0#1.base_2|) 0) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_start_~#t2~0#1.base_2|) (not (= |v_ULTIMATE.start_start_~#t2~0#1.base_2| 0)) (= (store |v_#length_6| |v_ULTIMATE.start_start_~#t2~0#1.base_2| 4) |v_#length_5|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{ULTIMATE.start_start_~#t2~0#1.offset=|v_ULTIMATE.start_start_~#t2~0#1.offset_2|, #StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_start_~#t2~0#1.base=|v_ULTIMATE.start_start_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_start_~#t2~0#1.offset, ULTIMATE.start_start_~#t2~0#1.base, #valid, #length] 233#[L728-2]don't care [256] L728-2-->L729: Formula: (= |v_ULTIMATE.start_start_#t~pre3#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_start_#t~pre3#1] 235#[L729]don't care [274] L729-->L729-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 237#[L729-1]don't care [290] L729-1-->L729-2: Formula: (and (<= 0 |v_ULTIMATE.start_start_~#t1~0#1.offset_3|) (= (store |v_#memory_int_4| |v_ULTIMATE.start_start_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_start_~#t1~0#1.base_3|) |v_ULTIMATE.start_start_~#t1~0#1.offset_3| |v_ULTIMATE.start_start_#t~pre3#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_start_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_start_~#t1~0#1.base_3|)) (= (select |v_#valid_8| |v_ULTIMATE.start_start_~#t1~0#1.base_3|) 1)) InVars {ULTIMATE.start_start_~#t1~0#1.offset=|v_ULTIMATE.start_start_~#t1~0#1.offset_3|, ULTIMATE.start_start_~#t1~0#1.base=|v_ULTIMATE.start_start_~#t1~0#1.base_3|, #valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_3|, #length=|v_#length_7|} OutVars{ULTIMATE.start_start_~#t1~0#1.offset=|v_ULTIMATE.start_start_~#t1~0#1.offset_3|, ULTIMATE.start_start_~#t1~0#1.base=|v_ULTIMATE.start_start_~#t1~0#1.base_3|, #valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, ULTIMATE.start_start_#t~pre3#1=|v_ULTIMATE.start_start_#t~pre3#1_3|, #length=|v_#length_7|} AuxVars[] AssignedVars[#memory_int] 239#[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] 241#[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] 245#[L711-1, L729-3]don't care [2022-07-26 13:22:13,347 INFO L735 eck$LassoCheckResult]: Loop: 245#[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[] 253#[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] 245#[L711-1, L729-3]don't care [2022-07-26 13:22:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:22:13,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1252068978, now seen corresponding path program 1 times [2022-07-26 13:22:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:22:13,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975122649] [2022-07-26 13:22:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:22:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:22:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:13,517 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:22:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:13,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:22:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:22:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash 13219, now seen corresponding path program 1 times [2022-07-26 13:22:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:22:13,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865867231] [2022-07-26 13:22:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:22:13,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:22:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:13,633 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:22:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:13,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:22:13,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:22:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash -647432720, now seen corresponding path program 1 times [2022-07-26 13:22:13,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:22:13,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56660596] [2022-07-26 13:22:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:22:13,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:22:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:13,735 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:22:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:13,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:22:14,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 01:22:14 BoogieIcfgContainer [2022-07-26 13:22:14,943 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 13:22:14,945 INFO L158 Benchmark]: Toolchain (without parser) took 3177.63ms. Allocated memory was 180.4MB in the beginning and 244.3MB in the end (delta: 64.0MB). Free memory was 120.9MB in the beginning and 179.5MB in the end (delta: -58.6MB). Peak memory consumption was 83.4MB. Max. memory is 8.0GB. [2022-07-26 13:22:14,945 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 13:22:14,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.91ms. Allocated memory was 180.4MB in the beginning and 244.3MB in the end (delta: 64.0MB). Free memory was 120.6MB in the beginning and 205.0MB in the end (delta: -84.4MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2022-07-26 13:22:14,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.66ms. Allocated memory is still 244.3MB. Free memory was 205.0MB in the beginning and 202.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-07-26 13:22:14,947 INFO L158 Benchmark]: Boogie Preprocessor took 53.60ms. Allocated memory is still 244.3MB. Free memory was 202.4MB in the beginning and 200.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-07-26 13:22:14,948 INFO L158 Benchmark]: RCFGBuilder took 527.11ms. Allocated memory is still 244.3MB. Free memory was 200.8MB in the beginning and 183.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-07-26 13:22:14,948 INFO L158 Benchmark]: BuchiAutomizer took 1994.80ms. Allocated memory is still 244.3MB. Free memory was 182.5MB in the beginning and 179.5MB in the end (delta: 3.0MB). Peak memory consumption was 81.1MB. Max. memory is 8.0GB. [2022-07-26 13:22:14,951 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 180.4MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 537.91ms. Allocated memory was 180.4MB in the beginning and 244.3MB in the end (delta: 64.0MB). Free memory was 120.6MB in the beginning and 205.0MB in the end (delta: -84.4MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.66ms. Allocated memory is still 244.3MB. Free memory was 205.0MB in the beginning and 202.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.60ms. Allocated memory is still 244.3MB. Free memory was 202.4MB in the beginning and 200.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 527.11ms. Allocated memory is still 244.3MB. Free memory was 200.8MB in the beginning and 183.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * BuchiAutomizer took 1994.80ms. Allocated memory is still 244.3MB. Free memory was 182.5MB in the beginning and 179.5MB in the end (delta: 3.0MB). Peak memory consumption was 81.1MB. 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 1.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. 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: 0.1s - 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={0:0}, \result=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@2db03edc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44372857 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56ab2f09 in-1,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ccd35a4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e9dff10=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@1e6337c0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@861d0c5=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 FALSE 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. RESULT: Ultimate proved your program to be incorrect! [2022-07-26 13:22:15,009 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...