/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-lit/fk2012.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 13:44:22,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 13:44:22,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 13:44:22,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-26 13:44:22,485 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 13:44:22,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 13:44:22,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 13:44:22,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 13:44:22,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 13:44:22,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 13:44:22,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 13:44:22,500 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 13:44:22,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 13:44:22,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 13:44:22,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 13:44:22,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 13:44:22,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 13:44:22,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 13:44:22,502 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 13:44:22,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 13:44:22,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 13:44:22,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 13:44:22,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 13:44:22,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 13:44:22,726 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 13:44:22,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fk2012.i [2022-07-26 13:44:22,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b405ff4ad/64a4e8f4aa84446387956624ce35a8b7/FLAG5da482a43 [2022-07-26 13:44:23,208 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 13:44:23,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fk2012.i [2022-07-26 13:44:23,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b405ff4ad/64a4e8f4aa84446387956624ce35a8b7/FLAG5da482a43 [2022-07-26 13:44:23,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b405ff4ad/64a4e8f4aa84446387956624ce35a8b7 [2022-07-26 13:44:23,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 13:44:23,569 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 13:44:23,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 13:44:23,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 13:44:23,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 13:44:23,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:23,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767a49c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23, skipping insertion in model container [2022-07-26 13:44:23,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:23,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 13:44:23,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 13:44:23,760 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-lit/fk2012.i[800,813] [2022-07-26 13:44:23,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:44:23,925 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 13:44:23,932 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-lit/fk2012.i[800,813] [2022-07-26 13:44:23,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:44:23,995 INFO L208 MainTranslator]: Completed translation [2022-07-26 13:44:23,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23 WrapperNode [2022-07-26 13:44:23,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 13:44:23,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 13:44:23,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 13:44:23,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 13:44:24,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,037 INFO L137 Inliner]: procedures = 277, calls = 35, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 156 [2022-07-26 13:44:24,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 13:44:24,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 13:44:24,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 13:44:24,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 13:44:24,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 13:44:24,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 13:44:24,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 13:44:24,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 13:44:24,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (1/1) ... [2022-07-26 13:44:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:44:24,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:44:24,102 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 13:44:24,104 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 13:44:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-26 13:44:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 13:44:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 13:44:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-26 13:44:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 13:44:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 13:44:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure producer [2022-07-26 13:44:24,130 INFO L138 BoogieDeclarations]: Found implementation of procedure producer [2022-07-26 13:44:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure consumer [2022-07-26 13:44:24,130 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer [2022-07-26 13:44:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 13:44:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 13:44:24,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 13:44:24,134 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 13:44:24,254 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 13:44:24,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 13:44:24,432 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 13:44:24,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 13:44:24,478 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-26 13:44:24,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:44:24 BoogieIcfgContainer [2022-07-26 13:44:24,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 13:44:24,481 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 13:44:24,481 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 13:44:24,484 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 13:44:24,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:24,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 01:44:23" (1/3) ... [2022-07-26 13:44:24,485 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b3fc73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:44:24, skipping insertion in model container [2022-07-26 13:44:24,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:24,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:44:23" (2/3) ... [2022-07-26 13:44:24,486 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b3fc73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:44:24, skipping insertion in model container [2022-07-26 13:44:24,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:44:24,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:44:24" (3/3) ... [2022-07-26 13:44:24,487 INFO L322 chiAutomizerObserver]: Analyzing ICFG fk2012.i [2022-07-26 13:44:24,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-26 13:44:24,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 246 flow [2022-07-26 13:44:24,604 INFO L129 PetriNetUnfolder]: 23/254 cut-off events. [2022-07-26 13:44:24,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-26 13:44:24,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 254 events. 23/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 963 event pairs, 1 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 117. Up to 8 conditions per place. [2022-07-26 13:44:24,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 118 transitions, 246 flow [2022-07-26 13:44:24,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 118 transitions, 246 flow [2022-07-26 13:44:24,619 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-26 13:44:24,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 118 transitions, 246 flow [2022-07-26 13:44:24,629 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 118 transitions, 246 flow [2022-07-26 13:44:24,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 246 flow [2022-07-26 13:44:24,657 INFO L129 PetriNetUnfolder]: 23/254 cut-off events. [2022-07-26 13:44:24,657 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-26 13:44:24,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 254 events. 23/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 966 event pairs, 1 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 117. Up to 8 conditions per place. [2022-07-26 13:44:24,665 INFO L116 LiptonReduction]: Number of co-enabled transitions 6184 [2022-07-26 13:44:26,724 INFO L131 LiptonReduction]: Checked pairs total: 10175 [2022-07-26 13:44:26,724 INFO L133 LiptonReduction]: Total number of compositions: 99 [2022-07-26 13:44:26,742 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 13:44:26,742 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 13:44:26,742 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 13:44:26,742 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 13:44:26,742 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 13:44:26,743 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 13:44:26,743 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 13:44:26,743 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 13:44:26,744 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 13:44:26,890 INFO L131 ngComponentsAnalysis]: Automaton has 242 accepting balls. 476 [2022-07-26 13:44:26,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:44:26,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:44:26,899 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-26 13:44:26,899 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-26 13:44:26,900 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-26 13:44:26,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 838 states, but on-demand construction may add more states [2022-07-26 13:44:26,912 INFO L131 ngComponentsAnalysis]: Automaton has 242 accepting balls. 476 [2022-07-26 13:44:26,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:44:26,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:44:26,912 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-26 13:44:26,913 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-26 13:44:26,916 INFO L733 eck$LassoCheckResult]: Stem: 116#[ULTIMATE.startENTRY]don't care [634] ULTIMATE.startENTRY-->L1066-4: Formula: (let ((.cse0 (select |v_#memory_int_33| 1))) (and (= |v_ULTIMATE.start_main_~i~0#1_19| 0) (< |v_#StackHeapBarrier_19| |v_ULTIMATE.start_main_~#t~0#1.base_43|) (= v_~lock1~0_427 0) (= (store |v_#valid_63| |v_ULTIMATE.start_main_~#t~0#1.base_43| 1) |v_#valid_62|) (= v_~counter~0_216 0) (= (select |v_#length_46| 1) 2) (= (select .cse0 1) 0) (= v_~lock2~0_139 0) (< 0 |v_#StackHeapBarrier_19|) (= |v_#NULL.offset_8| 0) (= (select |v_#length_46| 2) 9) (= 0 (select |v_#valid_63| 0)) (= (select |v_#valid_63| |v_ULTIMATE.start_main_~#t~0#1.base_43|) 0) (= (select |v_#valid_63| 2) 1) (= (select |v_#valid_63| 1) 1) (= |v_#NULL.base_8| 0) (= |v_ULTIMATE.start_main_~#t~0#1.offset_37| 0) (= (store |v_#length_46| |v_ULTIMATE.start_main_~#t~0#1.base_43| 4) |v_#length_45|) (= 48 (select .cse0 0)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_19|, #valid=|v_#valid_63|, #memory_int=|v_#memory_int_33|, #length=|v_#length_46|} OutVars{~counter~0=v_~counter~0_216, ULTIMATE.start_main_#t~nondet10#1=|v_ULTIMATE.start_main_#t~nondet10#1_15|, ULTIMATE.start_main_#t~pre11#1=|v_ULTIMATE.start_main_#t~pre11#1_27|, ULTIMATE.start_main_#t~pre9#1=|v_ULTIMATE.start_main_#t~pre9#1_25|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_26|, #NULL.offset=|v_#NULL.offset_8|, ~lock1~0=v_~lock1~0_427, ~lock2~0=v_~lock2~0_139, ULTIMATE.start_main_#t~nondet12#1=|v_ULTIMATE.start_main_#t~nondet12#1_15|, #NULL.base=|v_#NULL.base_8|, ULTIMATE.start_main_~i~0#1=|v_ULTIMATE.start_main_~i~0#1_19|, #StackHeapBarrier=|v_#StackHeapBarrier_19|, ULTIMATE.start_main_~#t~0#1.offset=|v_ULTIMATE.start_main_~#t~0#1.offset_37|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_42|, #valid=|v_#valid_62|, #memory_int=|v_#memory_int_33|, #length=|v_#length_45|, ULTIMATE.start_main_~#t~0#1.base=|v_ULTIMATE.start_main_~#t~0#1.base_43|} AuxVars[] AssignedVars[~counter~0, ULTIMATE.start_main_#t~nondet10#1, ULTIMATE.start_main_#t~pre11#1, ULTIMATE.start_main_#t~pre9#1, ULTIMATE.start_main_#res#1, #NULL.offset, ~lock1~0, ~lock2~0, ULTIMATE.start_main_#t~nondet12#1, #NULL.base, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~#t~0#1.offset, ULTIMATE.start_main_#t~nondet8#1, #valid, #length, ULTIMATE.start_main_~#t~0#1.base] 119#[L1066-4]don't care [628] L1066-4-->L1069-3: Formula: (and (= (select |v_#valid_56| |v_ULTIMATE.start_main_~#t~0#1.base_39|) 1) (= (+ |v_#pthreadsForks_28| 1) |v_#pthreadsForks_27|) (= |v_ULTIMATE.start_main_#t~pre11#1_23| |v_#pthreadsForks_28|) (<= (+ |v_ULTIMATE.start_main_~#t~0#1.offset_33| 4) (select |v_#length_39| |v_ULTIMATE.start_main_~#t~0#1.base_39|)) (<= 0 |v_ULTIMATE.start_main_~#t~0#1.offset_33|) (= |v_#memory_int_27| (store |v_#memory_int_28| |v_ULTIMATE.start_main_~#t~0#1.base_39| (store (select |v_#memory_int_28| |v_ULTIMATE.start_main_~#t~0#1.base_39|) |v_ULTIMATE.start_main_~#t~0#1.offset_33| |v_ULTIMATE.start_main_#t~pre11#1_23|))) (= |v_ULTIMATE.start_main_#t~nondet8#1_37| 0)) InVars {#pthreadsForks=|v_#pthreadsForks_28|, ULTIMATE.start_main_~#t~0#1.offset=|v_ULTIMATE.start_main_~#t~0#1.offset_33|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_37|, #valid=|v_#valid_56|, #memory_int=|v_#memory_int_28|, #length=|v_#length_39|, ULTIMATE.start_main_~#t~0#1.base=|v_ULTIMATE.start_main_~#t~0#1.base_39|} OutVars{ULTIMATE.start_main_#t~pre11#1=|v_ULTIMATE.start_main_#t~pre11#1_23|, #pthreadsForks=|v_#pthreadsForks_27|, ULTIMATE.start_main_~#t~0#1.offset=|v_ULTIMATE.start_main_~#t~0#1.offset_33|, #valid=|v_#valid_56|, #memory_int=|v_#memory_int_27|, #length=|v_#length_39|, ULTIMATE.start_main_~#t~0#1.base=|v_ULTIMATE.start_main_~#t~0#1.base_39|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre11#1, #pthreadsForks, ULTIMATE.start_main_#t~nondet8#1, #memory_int] 125#[L1069-3]don't care [535] L1069-3-->consumerENTRY: Formula: (and (= v_consumerThread1of1ForFork1_thidvar1_2 0) (= |v_consumerThread1of1ForFork1_#in~arg#1.base_4| 0) (= v_consumerThread1of1ForFork1_thidvar0_2 |v_ULTIMATE.start_main_#t~pre11#1_6|) (= |v_consumerThread1of1ForFork1_#in~arg#1.offset_4| 0)) InVars {ULTIMATE.start_main_#t~pre11#1=|v_ULTIMATE.start_main_#t~pre11#1_6|} OutVars{consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_8|, consumerThread1of1ForFork1___VERIFIER_assert_#in~cond#1=|v_consumerThread1of1ForFork1___VERIFIER_assert_#in~cond#1_6|, consumerThread1of1ForFork1_~arg#1.base=|v_consumerThread1of1ForFork1_~arg#1.base_4|, ULTIMATE.start_main_#t~pre11#1=|v_ULTIMATE.start_main_#t~pre11#1_6|, consumerThread1of1ForFork1_~arg#1.offset=|v_consumerThread1of1ForFork1_~arg#1.offset_4|, consumerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_consumerThread1of1ForFork1_assume_abort_if_not_~cond#1_8|, consumerThread1of1ForFork1___VERIFIER_assert_~cond#1=|v_consumerThread1of1ForFork1___VERIFIER_assert_~cond#1_10|, consumerThread1of1ForFork1_#res#1.base=|v_consumerThread1of1ForFork1_#res#1.base_4|, consumerThread1of1ForFork1_thidvar1=v_consumerThread1of1ForFork1_thidvar1_2, consumerThread1of1ForFork1_thidvar0=v_consumerThread1of1ForFork1_thidvar0_2, consumerThread1of1ForFork1_#res#1.offset=|v_consumerThread1of1ForFork1_#res#1.offset_4|, consumerThread1of1ForFork1_#in~arg#1.offset=|v_consumerThread1of1ForFork1_#in~arg#1.offset_4|, consumerThread1of1ForFork1_#t~post7#1=|v_consumerThread1of1ForFork1_#t~post7#1_8|, consumerThread1of1ForFork1_#in~arg#1.base=|v_consumerThread1of1ForFork1_#in~arg#1.base_4|} AuxVars[] AssignedVars[consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1, consumerThread1of1ForFork1___VERIFIER_assert_#in~cond#1, consumerThread1of1ForFork1_~arg#1.base, consumerThread1of1ForFork1_~arg#1.offset, consumerThread1of1ForFork1_assume_abort_if_not_~cond#1, consumerThread1of1ForFork1___VERIFIER_assert_~cond#1, consumerThread1of1ForFork1_#res#1.base, consumerThread1of1ForFork1_thidvar1, consumerThread1of1ForFork1_thidvar0, consumerThread1of1ForFork1_#res#1.offset, consumerThread1of1ForFork1_#in~arg#1.offset, consumerThread1of1ForFork1_#t~post7#1, consumerThread1of1ForFork1_#in~arg#1.base] 129#[L1069-4, consumerENTRY]don't care [501] consumerENTRY-->L1049-2: Formula: (and (= |v_consumerThread1of1ForFork1_~arg#1.offset_1| |v_consumerThread1of1ForFork1_#in~arg#1.offset_1|) (= |v_consumerThread1of1ForFork1_~arg#1.base_1| |v_consumerThread1of1ForFork1_#in~arg#1.base_1|)) InVars {consumerThread1of1ForFork1_#in~arg#1.base=|v_consumerThread1of1ForFork1_#in~arg#1.base_1|, consumerThread1of1ForFork1_#in~arg#1.offset=|v_consumerThread1of1ForFork1_#in~arg#1.offset_1|} OutVars{consumerThread1of1ForFork1_#in~arg#1.base=|v_consumerThread1of1ForFork1_#in~arg#1.base_1|, consumerThread1of1ForFork1_#in~arg#1.offset=|v_consumerThread1of1ForFork1_#in~arg#1.offset_1|, consumerThread1of1ForFork1_~arg#1.base=|v_consumerThread1of1ForFork1_~arg#1.base_1|, consumerThread1of1ForFork1_~arg#1.offset=|v_consumerThread1of1ForFork1_~arg#1.offset_1|} AuxVars[] AssignedVars[consumerThread1of1ForFork1_~arg#1.base, consumerThread1of1ForFork1_~arg#1.offset] 135#[L1069-4, L1049-2]don't care [2022-07-26 13:44:26,917 INFO L735 eck$LassoCheckResult]: Loop: 135#[L1069-4, L1049-2]don't care [596] L1049-2-->L1051: Formula: (and (= |v_consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_47| (ite (= v_~lock1~0_212 0) 1 0)) (= v_~lock1~0_211 1) (= |v_consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_47| |v_consumerThread1of1ForFork1_assume_abort_if_not_~cond#1_47|) (not (= |v_consumerThread1of1ForFork1_assume_abort_if_not_~cond#1_47| 0))) InVars {~lock1~0=v_~lock1~0_212} OutVars{consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_47|, consumerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_consumerThread1of1ForFork1_assume_abort_if_not_~cond#1_47|, ~lock1~0=v_~lock1~0_211} AuxVars[] AssignedVars[consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1, consumerThread1of1ForFork1_assume_abort_if_not_~cond#1, ~lock1~0] 151#[L1051, L1069-4]don't care [513] L1051-->L1052: Formula: (not (< 0 v_~counter~0_12)) InVars {~counter~0=v_~counter~0_12} OutVars{~counter~0=v_~counter~0_12} AuxVars[] AssignedVars[] 183#[L1052, L1069-4]don't care [594] L1052-->L1049-2: Formula: (and (= |v_consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_41| |v_consumerThread1of1ForFork1_assume_abort_if_not_~cond#1_41|) (= |v_consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_41| (ite (= v_~lock1~0_196 1) 1 0)) (not (= |v_consumerThread1of1ForFork1_assume_abort_if_not_~cond#1_41| 0)) (= v_~lock1~0_195 0)) InVars {~lock1~0=v_~lock1~0_196} OutVars{consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1_41|, consumerThread1of1ForFork1_assume_abort_if_not_~cond#1=|v_consumerThread1of1ForFork1_assume_abort_if_not_~cond#1_41|, ~lock1~0=v_~lock1~0_195} AuxVars[] AssignedVars[consumerThread1of1ForFork1_assume_abort_if_not_#in~cond#1, consumerThread1of1ForFork1_assume_abort_if_not_~cond#1, ~lock1~0] 135#[L1069-4, L1049-2]don't care [2022-07-26 13:44:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:44:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash 20431609, now seen corresponding path program 1 times [2022-07-26 13:44:26,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:44:26,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754218812] [2022-07-26 13:44:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:44:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:44:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:27,023 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:44:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:27,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:44:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:44:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash 619044, now seen corresponding path program 1 times [2022-07-26 13:44:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:44:27,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377586305] [2022-07-26 13:44:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:44:27,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:44:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:27,104 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:44:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:27,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:44:27,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:44:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1206703060, now seen corresponding path program 1 times [2022-07-26 13:44:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:44:27,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850062285] [2022-07-26 13:44:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:44:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:44:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:27,145 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:44:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:44:27,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:44:27,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 01:44:27 BoogieIcfgContainer [2022-07-26 13:44:27,578 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 13:44:27,579 INFO L158 Benchmark]: Toolchain (without parser) took 4009.57ms. Allocated memory was 215.0MB in the beginning and 268.4MB in the end (delta: 53.5MB). Free memory was 191.1MB in the beginning and 232.6MB in the end (delta: -41.5MB). Peak memory consumption was 149.4MB. Max. memory is 8.0GB. [2022-07-26 13:44:27,579 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 215.0MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 13:44:27,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.09ms. Allocated memory was 215.0MB in the beginning and 268.4MB in the end (delta: 53.5MB). Free memory was 190.9MB in the beginning and 226.3MB in the end (delta: -35.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-07-26 13:44:27,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.16ms. Allocated memory is still 268.4MB. Free memory was 226.3MB in the beginning and 223.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 13:44:27,580 INFO L158 Benchmark]: Boogie Preprocessor took 30.23ms. Allocated memory is still 268.4MB. Free memory was 223.7MB in the beginning and 222.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 13:44:27,580 INFO L158 Benchmark]: RCFGBuilder took 411.61ms. Allocated memory is still 268.4MB. Free memory was 222.1MB in the beginning and 202.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-07-26 13:44:27,581 INFO L158 Benchmark]: BuchiAutomizer took 3097.10ms. Allocated memory is still 268.4MB. Free memory was 202.2MB in the beginning and 232.6MB in the end (delta: -30.4MB). Peak memory consumption was 106.7MB. Max. memory is 8.0GB. [2022-07-26 13:44:27,582 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 215.0MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 426.09ms. Allocated memory was 215.0MB in the beginning and 268.4MB in the end (delta: 53.5MB). Free memory was 190.9MB in the beginning and 226.3MB in the end (delta: -35.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.16ms. Allocated memory is still 268.4MB. Free memory was 226.3MB in the beginning and 223.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.23ms. Allocated memory is still 268.4MB. Free memory was 223.7MB in the beginning and 222.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 411.61ms. Allocated memory is still 268.4MB. Free memory was 222.1MB in the beginning and 202.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * BuchiAutomizer took 3097.10ms. Allocated memory is still 268.4MB. Free memory was 202.2MB in the beginning and 232.6MB in the end (delta: -30.4MB). Peak memory consumption was 106.7MB. 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 3.0s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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: 2.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\old(cond)=0, \old(cond)=1, \result=0, \result={0:0}, arg={0:0}, arg={0:0}, cond=0, cond=1, counter=0, i=0, lock1=0, lock2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@205ba39d in-1,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3de1fece in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61f77316=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@88de850=0, t={27799:0}} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L1000] 0 volatile int lock1; [L1001] 0 volatile int lock2; [L1002] 0 volatile int counter; [L1060] 0 pthread_t t; [L1061] 0 counter = 0 [L1062] 0 lock1 = 0 [L1063] 0 lock2 = 0 [L1064] 0 int i =0; [L1065] COND TRUE 0 1 [L1066] COND FALSE 0 !(__VERIFIER_nondet_int()) [L1069] FCALL, FORK 0 pthread_create(&t, 0, consumer, 0) Loop: [L1049] COND TRUE 1 [L1050] CALL acquire1() [L1005] CALL assume_abort_if_not(lock1 == 0) [L16] COND TRUE !cond [L1005] RET assume_abort_if_not(lock1 == 0) [L1006] lock1 = 1 [L1050] RET acquire1() [L1051] COND FALSE !(counter > 0) [L1052] CALL release1() [L1011] CALL assume_abort_if_not(lock1 == 1) [L16] COND FALSE !(!cond) [L1011] RET assume_abort_if_not(lock1 == 1) [L1012] lock1 = 0 [L1052] RET release1() End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 113 PlacesBefore, 32 PlacesAfterwards, 118 TransitionsBefore, 33 TransitionsAfterwards, 6184 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 10175 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8169, positive: 7995, positive conditional: 0, positive unconditional: 7995, negative: 174, negative conditional: 0, negative unconditional: 174, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4609, positive: 4563, positive conditional: 0, positive unconditional: 4563, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4609, positive: 4518, positive conditional: 0, positive unconditional: 4518, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 91, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 82, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8169, positive: 3432, positive conditional: 0, positive unconditional: 3432, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 4609, unknown conditional: 0, unknown unconditional: 4609] , Statistics on independence cache: Total cache size (in pairs): 401, Positive cache size: 379, Positive conditional cache size: 0, Positive unconditional cache size: 379, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 RESULT: Ultimate proved your program to be incorrect! [2022-07-26 13:44:27,631 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...