./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eda1db03c6bbf67384273953d0d8b5555e2e1b93f41ec60bfebaaef6c754306f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:09,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:09,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:09,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:09,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:09,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:09,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:09,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:09,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:09,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:09,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:09,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:09,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:09,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:09,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:09,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:09,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:09,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:09,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:09,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:09,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:09,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:09,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:09,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:09,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:09,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:09,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:09,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:09,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:09,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:09,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:09,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:09,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:09,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:09,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:09,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:09,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:09,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:09,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:09,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:09,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:09,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:54:09,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:09,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:09,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:09,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:09,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:09,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:09,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:09,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:09,687 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:09,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:09,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:09,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:54:09,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:09,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:09,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:09,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:09,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:09,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eda1db03c6bbf67384273953d0d8b5555e2e1b93f41ec60bfebaaef6c754306f [2022-02-20 19:54:09,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:09,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:09,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:09,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:09,908 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:09,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2022-02-20 19:54:09,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df96d28f/3cd4705f93b34e82aac5a96a03bdb384/FLAG301a2e322 [2022-02-20 19:54:10,349 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:10,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2022-02-20 19:54:10,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df96d28f/3cd4705f93b34e82aac5a96a03bdb384/FLAG301a2e322 [2022-02-20 19:54:10,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df96d28f/3cd4705f93b34e82aac5a96a03bdb384 [2022-02-20 19:54:10,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:10,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:10,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:10,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:10,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:10,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb1f6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10, skipping insertion in model container [2022-02-20 19:54:10,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:10,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:10,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[913,926] [2022-02-20 19:54:10,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[5994,6007] [2022-02-20 19:54:10,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:10,607 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:10,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[913,926] [2022-02-20 19:54:10,635 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[5994,6007] [2022-02-20 19:54:10,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:10,680 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:10,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10 WrapperNode [2022-02-20 19:54:10,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:10,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:10,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:10,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:10,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,741 INFO L137 Inliner]: procedures = 52, calls = 55, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 476 [2022-02-20 19:54:10,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:10,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:10,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:10,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:10,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:10,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:10,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:10,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:10,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (1/1) ... [2022-02-20 19:54:10,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:10,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:10,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 19:54:10,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 19:54:10,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:10,840 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:10,844 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:10,844 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:10,844 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:10,844 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:10,844 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:10,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:54:10,845 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:10,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:10,846 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:10,846 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:10,902 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:10,904 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:11,282 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:11,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:11,289 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-02-20 19:54:11,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:11 BoogieIcfgContainer [2022-02-20 19:54:11,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:11,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:11,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:11,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:11,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:10" (1/3) ... [2022-02-20 19:54:11,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcaf0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:11, skipping insertion in model container [2022-02-20 19:54:11,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:10" (2/3) ... [2022-02-20 19:54:11,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcaf0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:11, skipping insertion in model container [2022-02-20 19:54:11,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:11" (3/3) ... [2022-02-20 19:54:11,296 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2022-02-20 19:54:11,299 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:11,299 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:11,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:11,347 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:54:11,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 170 states have (on average 1.5647058823529412) internal successors, (266), 176 states have internal predecessors, (266), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-02-20 19:54:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:11,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:11,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:54:11,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash -937490108, now seen corresponding path program 1 times [2022-02-20 19:54:11,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:11,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265261799] [2022-02-20 19:54:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:11,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:11,498 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:11,560 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 19:54:11,562 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:11,562 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:11,564 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:11,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:54:11,567 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:11,569 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:11,599 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:11,600 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 19:54:11,603 INFO L158 Benchmark]: Toolchain (without parser) took 1233.35ms. Allocated memory was 123.7MB in the beginning and 155.2MB in the end (delta: 31.5MB). Free memory was 84.7MB in the beginning and 113.4MB in the end (delta: -28.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:11,604 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:11,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.12ms. Allocated memory is still 123.7MB. Free memory was 84.4MB in the beginning and 90.3MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 19:54:11,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.90ms. Allocated memory is still 123.7MB. Free memory was 90.3MB in the beginning and 86.6MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:11,606 INFO L158 Benchmark]: Boogie Preprocessor took 25.73ms. Allocated memory is still 123.7MB. Free memory was 86.6MB in the beginning and 84.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:11,609 INFO L158 Benchmark]: RCFGBuilder took 521.83ms. Allocated memory is still 123.7MB. Free memory was 84.0MB in the beginning and 54.1MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-02-20 19:54:11,610 INFO L158 Benchmark]: TraceAbstraction took 310.15ms. Allocated memory was 123.7MB in the beginning and 155.2MB in the end (delta: 31.5MB). Free memory was 53.6MB in the beginning and 113.4MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:11,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.12ms. Allocated memory is still 123.7MB. Free memory was 84.4MB in the beginning and 90.3MB in the end (delta: -5.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.90ms. Allocated memory is still 123.7MB. Free memory was 90.3MB in the beginning and 86.6MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.73ms. Allocated memory is still 123.7MB. Free memory was 86.6MB in the beginning and 84.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 521.83ms. Allocated memory is still 123.7MB. Free memory was 84.0MB in the beginning and 54.1MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 310.15ms. Allocated memory was 123.7MB in the beginning and 155.2MB in the end (delta: 31.5MB). Free memory was 53.6MB in the beginning and 113.4MB in the end (delta: -59.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 19:54:11,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eda1db03c6bbf67384273953d0d8b5555e2e1b93f41ec60bfebaaef6c754306f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:13,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:13,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:13,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:13,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:13,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:13,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:13,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:13,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:13,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:13,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:13,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:13,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:13,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:13,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:13,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:13,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:13,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:13,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:13,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:13,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:13,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:13,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:13,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:13,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:13,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:13,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:13,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:13,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:13,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:13,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:13,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:13,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:13,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:13,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:13,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:13,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:13,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:13,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:13,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:13,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:13,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 19:54:13,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:13,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:13,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:13,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:13,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:13,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:13,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:13,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:13,483 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:13,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:13,484 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:13,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 19:54:13,485 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:13,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:13,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:13,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:13,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:13,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:13,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:13,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:13,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:13,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:13,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:13,487 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 19:54:13,487 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 19:54:13,488 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:13,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:13,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:13,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 19:54:13,488 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eda1db03c6bbf67384273953d0d8b5555e2e1b93f41ec60bfebaaef6c754306f [2022-02-20 19:54:13,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:13,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:13,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:13,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:13,784 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:13,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2022-02-20 19:54:13,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8b9e9b1/a91dcf67ac9f459fbfb270a79272bba2/FLAGc1e3c9211 [2022-02-20 19:54:14,221 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:14,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2022-02-20 19:54:14,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8b9e9b1/a91dcf67ac9f459fbfb270a79272bba2/FLAGc1e3c9211 [2022-02-20 19:54:14,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef8b9e9b1/a91dcf67ac9f459fbfb270a79272bba2 [2022-02-20 19:54:14,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:14,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:14,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:14,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:14,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:14,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e76161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14, skipping insertion in model container [2022-02-20 19:54:14,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:14,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:14,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[913,926] [2022-02-20 19:54:14,386 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[5994,6007] [2022-02-20 19:54:14,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:14,456 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:14,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[913,926] [2022-02-20 19:54:14,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.02.cil-1.c[5994,6007] [2022-02-20 19:54:14,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:14,505 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:14,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14 WrapperNode [2022-02-20 19:54:14,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:14,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:14,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:14,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:14,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,549 INFO L137 Inliner]: procedures = 53, calls = 55, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 455 [2022-02-20 19:54:14,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:14,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:14,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:14,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:14,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:14,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:14,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:14,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:14,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (1/1) ... [2022-02-20 19:54:14,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:14,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:14,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 19:54:14,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 19:54:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:14,637 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:14,637 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 19:54:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:14,639 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:14,639 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:14,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:14,640 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:14,712 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:14,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:15,085 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:15,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:15,101 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-02-20 19:54:15,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:15 BoogieIcfgContainer [2022-02-20 19:54:15,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:15,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:15,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:15,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:15,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:14" (1/3) ... [2022-02-20 19:54:15,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6c0a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:15, skipping insertion in model container [2022-02-20 19:54:15,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:14" (2/3) ... [2022-02-20 19:54:15,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6c0a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:15, skipping insertion in model container [2022-02-20 19:54:15,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:15" (3/3) ... [2022-02-20 19:54:15,109 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.02.cil-1.c [2022-02-20 19:54:15,113 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:15,113 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:15,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:15,149 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:54:15,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 170 states have (on average 1.5647058823529412) internal successors, (266), 176 states have internal predecessors, (266), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-02-20 19:54:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:15,170 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:15,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:54:15,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:15,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash -937490108, now seen corresponding path program 1 times [2022-02-20 19:54:15,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:15,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803587486] [2022-02-20 19:54:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:15,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:15,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:15,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 19:54:15,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 19:54:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:15,317 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:15,389 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 19:54:15,393 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:15,394 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:15,395 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:15,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 19:54:15,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 19:54:15,607 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:15,609 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:15,641 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:15,641 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 19:54:15,645 INFO L158 Benchmark]: Toolchain (without parser) took 1405.76ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 42.7MB in the beginning and 48.3MB in the end (delta: -5.6MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-02-20 19:54:15,646 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 44.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:15,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.41ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 40.8MB in the end (delta: 1.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:15,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.66ms. Allocated memory is still 62.9MB. Free memory was 40.8MB in the beginning and 37.5MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:15,648 INFO L158 Benchmark]: Boogie Preprocessor took 25.38ms. Allocated memory is still 62.9MB. Free memory was 37.3MB in the beginning and 34.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:15,651 INFO L158 Benchmark]: RCFGBuilder took 527.47ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.7MB in the beginning and 46.3MB in the end (delta: -11.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2022-02-20 19:54:15,652 INFO L158 Benchmark]: TraceAbstraction took 539.42ms. Allocated memory is still 81.8MB. Free memory was 45.6MB in the beginning and 48.3MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:15,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 44.6MB in the beginning and 44.5MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.41ms. Allocated memory is still 62.9MB. Free memory was 42.6MB in the beginning and 40.8MB in the end (delta: 1.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.66ms. Allocated memory is still 62.9MB. Free memory was 40.8MB in the beginning and 37.5MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.38ms. Allocated memory is still 62.9MB. Free memory was 37.3MB in the beginning and 34.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.47ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.7MB in the beginning and 46.3MB in the end (delta: -11.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 539.42ms. Allocated memory is still 81.8MB. Free memory was 45.6MB in the beginning and 48.3MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 19:54:15,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator