./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.07.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.07.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 77868e64e7ba4b54d0333e7dadbcb6bda76f973f09d9a4966fd35e78e5c430a0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:24,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:24,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:24,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:24,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:24,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:24,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:24,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:24,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:24,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:24,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:24,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:24,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:24,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:24,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:24,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:24,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:24,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:24,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:24,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:24,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:24,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:24,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:24,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:24,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:24,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:24,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:24,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:24,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:24,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:24,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:24,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:24,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:24,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:24,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:24,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:24,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:24,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:24,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:24,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:24,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:24,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:54:24,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:24,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:24,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:24,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:24,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:24,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:24,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:24,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:24,992 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:24,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:24,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:24,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:54:24,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:24,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:24,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:24,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:24,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:24,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:24,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:24,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:24,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:24,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:24,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:24,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:24,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:24,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:24,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:24,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:24,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:54:24,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:54:24,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:24,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:24,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:24,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77868e64e7ba4b54d0333e7dadbcb6bda76f973f09d9a4966fd35e78e5c430a0 [2022-02-20 19:54:25,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:25,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:25,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:25,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:25,193 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:25,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.07.cil-1.c [2022-02-20 19:54:25,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ebc1d57/4afb388ccbae44c793ecb066d9e69a4a/FLAGbefe011e5 [2022-02-20 19:54:25,640 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:25,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.07.cil-1.c [2022-02-20 19:54:25,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ebc1d57/4afb388ccbae44c793ecb066d9e69a4a/FLAGbefe011e5 [2022-02-20 19:54:25,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ebc1d57/4afb388ccbae44c793ecb066d9e69a4a [2022-02-20 19:54:25,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:25,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:25,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:25,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:25,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:25,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1b91f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25, skipping insertion in model container [2022-02-20 19:54:25,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:25,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:25,848 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.07.cil-1.c[913,926] [2022-02-20 19:54:25,889 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.07.cil-1.c[5994,6007] [2022-02-20 19:54:25,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:25,953 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:25,961 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.07.cil-1.c[913,926] [2022-02-20 19:54:25,988 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.07.cil-1.c[5994,6007] [2022-02-20 19:54:26,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:26,061 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:26,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26 WrapperNode [2022-02-20 19:54:26,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:26,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:26,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:26,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:26,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,137 INFO L137 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 766 [2022-02-20 19:54:26,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:26,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:26,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:26,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:26,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:26,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:26,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:26,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:26,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (1/1) ... [2022-02-20 19:54:26,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:26,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:26,217 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 19:54:26,218 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 19:54:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:54:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:26,243 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:26,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:26,244 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:26,339 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:26,349 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:26,838 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:26,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:26,847 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-20 19:54:26,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:26 BoogieIcfgContainer [2022-02-20 19:54:26,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:26,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:26,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:26,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:26,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:25" (1/3) ... [2022-02-20 19:54:26,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408b80aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:26, skipping insertion in model container [2022-02-20 19:54:26,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:26" (2/3) ... [2022-02-20 19:54:26,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408b80aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:26, skipping insertion in model container [2022-02-20 19:54:26,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:26" (3/3) ... [2022-02-20 19:54:26,854 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.07.cil-1.c [2022-02-20 19:54:26,857 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:26,858 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:26,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:26,893 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 19:54:26,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 290 states have (on average 1.6241379310344828) internal successors, (471), 296 states have internal predecessors, (471), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:26,917 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:26,917 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 19:54:26,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash 35874639, now seen corresponding path program 1 times [2022-02-20 19:54:26,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:26,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22492282] [2022-02-20 19:54:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:27,002 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:27,038 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 19:54:27,039 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:27,040 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:27,042 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:27,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:54:27,045 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:27,048 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:27,069 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:27,069 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 19:54:27,072 INFO L158 Benchmark]: Toolchain (without parser) took 1390.93ms. Allocated memory is still 127.9MB. Free memory was 89.2MB in the beginning and 67.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-02-20 19:54:27,073 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 127.9MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:27,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.62ms. Allocated memory is still 127.9MB. Free memory was 89.0MB in the beginning and 92.6MB in the end (delta: -3.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 19:54:27,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.92ms. Allocated memory is still 127.9MB. Free memory was 92.6MB in the beginning and 87.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:27,074 INFO L158 Benchmark]: Boogie Preprocessor took 51.27ms. Allocated memory is still 127.9MB. Free memory was 87.9MB in the beginning and 84.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:27,074 INFO L158 Benchmark]: RCFGBuilder took 658.54ms. Allocated memory is still 127.9MB. Free memory was 84.3MB in the beginning and 93.0MB in the end (delta: -8.7MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:27,075 INFO L158 Benchmark]: TraceAbstraction took 221.94ms. Allocated memory is still 127.9MB. Free memory was 92.3MB in the beginning and 67.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:27,077 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 0.40ms. Allocated memory is still 127.9MB. Free memory is still 107.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.62ms. Allocated memory is still 127.9MB. Free memory was 89.0MB in the beginning and 92.6MB in the end (delta: -3.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.92ms. Allocated memory is still 127.9MB. Free memory was 92.6MB in the beginning and 87.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.27ms. Allocated memory is still 127.9MB. Free memory was 87.9MB in the beginning and 84.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 658.54ms. Allocated memory is still 127.9MB. Free memory was 84.3MB in the beginning and 93.0MB in the end (delta: -8.7MB). Peak memory consumption was 42.8MB. Max. memory is 16.1GB. * TraceAbstraction took 221.94ms. Allocated memory is still 127.9MB. Free memory was 92.3MB in the beginning and 67.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. 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 19:54:27,105 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 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.07.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 77868e64e7ba4b54d0333e7dadbcb6bda76f973f09d9a4966fd35e78e5c430a0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:28,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:28,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:28,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:28,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:28,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:28,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:28,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:28,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:28,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:28,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:28,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:28,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:28,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:28,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:28,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:28,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:28,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:28,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:28,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:28,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:28,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:28,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:28,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:28,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:28,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:28,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:28,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:28,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:28,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:28,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:28,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:28,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:28,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:28,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:28,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:28,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:28,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:28,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:28,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:28,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:28,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 19:54:28,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:28,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:28,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:28,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:28,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:28,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:28,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:28,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:28,892 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:28,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:28,893 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:28,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 19:54:28,894 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:28,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:28,895 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:28,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:28,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:28,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:28,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:28,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:28,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:28,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:28,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:28,903 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 19:54:28,903 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 19:54:28,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:28,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:28,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:28,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 19:54:28,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77868e64e7ba4b54d0333e7dadbcb6bda76f973f09d9a4966fd35e78e5c430a0 [2022-02-20 19:54:29,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:29,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:29,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:29,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:29,166 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:29,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.07.cil-1.c [2022-02-20 19:54:29,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee147546/a9f1651986a2443380b1aa18b98af2fe/FLAG96be34185 [2022-02-20 19:54:29,574 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:29,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.07.cil-1.c [2022-02-20 19:54:29,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee147546/a9f1651986a2443380b1aa18b98af2fe/FLAG96be34185 [2022-02-20 19:54:29,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fee147546/a9f1651986a2443380b1aa18b98af2fe [2022-02-20 19:54:29,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:29,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:29,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:29,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:29,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:29,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33245e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29, skipping insertion in model container [2022-02-20 19:54:29,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:30,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:30,118 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.07.cil-1.c[913,926] [2022-02-20 19:54:30,157 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.07.cil-1.c[5994,6007] [2022-02-20 19:54:30,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:30,274 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:30,288 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.07.cil-1.c[913,926] [2022-02-20 19:54:30,309 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.07.cil-1.c[5994,6007] [2022-02-20 19:54:30,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:30,385 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:30,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30 WrapperNode [2022-02-20 19:54:30,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:30,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:30,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:30,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:30,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,438 INFO L137 Inliner]: procedures = 63, calls = 70, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 735 [2022-02-20 19:54:30,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:30,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:30,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:30,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:30,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:30,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:30,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:30,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:30,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (1/1) ... [2022-02-20 19:54:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:30,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:30,540 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 19:54:30,548 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 19:54:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 19:54:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:30,684 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:30,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:31,254 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:31,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:31,269 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-02-20 19:54:31,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:31 BoogieIcfgContainer [2022-02-20 19:54:31,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:31,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:31,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:31,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:31,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:29" (1/3) ... [2022-02-20 19:54:31,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57641990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:31, skipping insertion in model container [2022-02-20 19:54:31,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:30" (2/3) ... [2022-02-20 19:54:31,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57641990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:31, skipping insertion in model container [2022-02-20 19:54:31,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:31" (3/3) ... [2022-02-20 19:54:31,276 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.07.cil-1.c [2022-02-20 19:54:31,281 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:31,281 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:31,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:31,331 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 19:54:31,331 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 290 states have (on average 1.6241379310344828) internal successors, (471), 296 states have internal predecessors, (471), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:31,354 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:31,354 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 19:54:31,354 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash 35874639, now seen corresponding path program 1 times [2022-02-20 19:54:31,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:31,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704074781] [2022-02-20 19:54:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:31,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:31,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:31,368 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 19:54:31,371 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 19:54:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:31,460 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:31,540 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 19:54:31,541 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:31,542 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:31,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:31,554 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 19:54:31,751 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 19:54:31,754 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:31,756 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:31,788 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:31,788 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 19:54:31,791 INFO L158 Benchmark]: Toolchain (without parser) took 1811.18ms. Allocated memory was 60.8MB in the beginning and 92.3MB in the end (delta: 31.5MB). Free memory was 38.7MB in the beginning and 67.4MB in the end (delta: -28.6MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,791 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 60.8MB. Free memory was 42.4MB in the beginning and 42.4MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:31,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.92ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.5MB in the beginning and 45.8MB in the end (delta: -7.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.33ms. Allocated memory is still 73.4MB. Free memory was 45.8MB in the beginning and 41.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,793 INFO L158 Benchmark]: Boogie Preprocessor took 45.67ms. Allocated memory is still 73.4MB. Free memory was 41.1MB in the beginning and 37.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,793 INFO L158 Benchmark]: RCFGBuilder took 769.76ms. Allocated memory is still 73.4MB. Free memory was 37.1MB in the beginning and 35.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,793 INFO L158 Benchmark]: TraceAbstraction took 518.06ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 35.5MB in the beginning and 67.4MB in the end (delta: -31.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,796 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 0.23ms. Allocated memory is still 60.8MB. Free memory was 42.4MB in the beginning and 42.4MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.92ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.5MB in the beginning and 45.8MB in the end (delta: -7.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.33ms. Allocated memory is still 73.4MB. Free memory was 45.8MB in the beginning and 41.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.67ms. Allocated memory is still 73.4MB. Free memory was 41.1MB in the beginning and 37.1MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 769.76ms. Allocated memory is still 73.4MB. Free memory was 37.1MB in the beginning and 35.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 518.06ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 35.5MB in the beginning and 67.4MB in the end (delta: -31.8MB). Peak memory consumption was 5.8MB. 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 19:54:31,836 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