./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.08.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.08.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 f3afbfdd07db0f20c72e9ddbb9df55e00686c374f25f62c43f14136ff2ce41ec --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:27,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:27,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:27,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:27,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:27,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:27,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:27,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:27,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:27,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:27,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:27,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:27,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:27,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:27,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:27,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:27,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:27,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:27,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:27,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:27,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:27,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:27,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:27,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:27,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:27,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:27,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:27,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:27,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:27,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:27,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:27,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:27,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:27,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:27,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:27,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:27,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:27,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:27,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:27,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:27,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:27,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:54:27,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:27,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:27,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:27,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:27,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:27,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:27,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:27,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:27,881 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:27,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:27,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:27,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:54:27,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:27,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:27,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:27,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:27,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:27,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:27,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:27,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:27,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:27,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:27,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:27,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:27,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:27,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:27,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:27,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:27,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:54:27,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:54:27,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:27,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:27,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:27,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3afbfdd07db0f20c72e9ddbb9df55e00686c374f25f62c43f14136ff2ce41ec [2022-02-20 19:54:28,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:28,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:28,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:28,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:28,073 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:28,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.08.cil-1.c [2022-02-20 19:54:28,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/917bbf77f/2efe1643cdb34720a15c91971e6377ad/FLAGd6cd33b0a [2022-02-20 19:54:28,545 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:28,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.08.cil-1.c [2022-02-20 19:54:28,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/917bbf77f/2efe1643cdb34720a15c91971e6377ad/FLAGd6cd33b0a [2022-02-20 19:54:28,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/917bbf77f/2efe1643cdb34720a15c91971e6377ad [2022-02-20 19:54:28,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:28,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:28,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:28,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:28,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:28,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:28,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b199037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28, skipping insertion in model container [2022-02-20 19:54:28,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:28,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:28,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:28,735 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.08.cil-1.c[913,926] [2022-02-20 19:54:28,762 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.08.cil-1.c[5994,6007] [2022-02-20 19:54:28,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:28,820 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:28,837 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.08.cil-1.c[913,926] [2022-02-20 19:54:28,852 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.08.cil-1.c[5994,6007] [2022-02-20 19:54:28,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:28,905 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:28,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28 WrapperNode [2022-02-20 19:54:28,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:28,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:28,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:28,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:28,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:28,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:28,983 INFO L137 Inliner]: procedures = 64, calls = 73, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 824 [2022-02-20 19:54:28,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:28,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:28,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:28,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:28,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:28,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:28,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:28,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:29,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:29,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:29,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:29,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:29,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:29,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:29,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:29,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (1/1) ... [2022-02-20 19:54:29,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:29,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:29,077 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 19:54:29,078 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 19:54:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:54:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:29,239 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:29,247 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:29,898 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:29,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:29,912 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-02-20 19:54:29,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:29 BoogieIcfgContainer [2022-02-20 19:54:29,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:29,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:29,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:29,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:29,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:28" (1/3) ... [2022-02-20 19:54:29,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49994983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:29, skipping insertion in model container [2022-02-20 19:54:29,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:28" (2/3) ... [2022-02-20 19:54:29,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49994983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:29, skipping insertion in model container [2022-02-20 19:54:29,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:29" (3/3) ... [2022-02-20 19:54:29,920 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.08.cil-1.c [2022-02-20 19:54:29,923 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:29,923 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:29,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:29,970 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 19:54:29,971 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 355 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 320 states have internal predecessors, (512), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-02-20 19:54:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:29,995 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:29,995 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 19:54:29,996 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1219180064, now seen corresponding path program 1 times [2022-02-20 19:54:30,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:30,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899830858] [2022-02-20 19:54:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-20 19:54:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:30,180 INFO L290 TraceCheckUtils]: 0: Hoare triple {358#true} havoc ~__retres1~2; {358#true} is VALID [2022-02-20 19:54:30,180 INFO L290 TraceCheckUtils]: 1: Hoare triple {358#true} assume 0 == ~p_dw_st~0;~__retres1~2 := 1; {358#true} is VALID [2022-02-20 19:54:30,181 INFO L290 TraceCheckUtils]: 2: Hoare triple {358#true} #res := ~__retres1~2; {358#true} is VALID [2022-02-20 19:54:30,181 INFO L290 TraceCheckUtils]: 3: Hoare triple {358#true} assume true; {358#true} is VALID [2022-02-20 19:54:30,181 INFO L284 TraceCheckUtils]: 4: Hoare quadruple {358#true} {359#false} #1375#return; {359#false} is VALID [2022-02-20 19:54:30,183 INFO L290 TraceCheckUtils]: 0: Hoare triple {358#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(19, 2);call #Ultimate.allocInit(12, 3);~q_buf_0~0 := 0;~q_free~0 := 0;~q_read_ev~0 := 0;~q_write_ev~0 := 0;~p_num_write~0 := 0;~p_last_write~0 := 0;~p_dw_st~0 := 0;~p_dw_pc~0 := 0;~p_dw_i~0 := 0;~c_num_read~0 := 0;~c_last_read~0 := 0;~c_dr_st~0 := 0;~c_dr_pc~0 := 0;~c_dr_i~0 := 0;~a_t~0 := 0;~m_pc~0 := 0;~t1_pc~0 := 0;~t2_pc~0 := 0;~t3_pc~0 := 0;~t4_pc~0 := 0;~t5_pc~0 := 0;~t6_pc~0 := 0;~t7_pc~0 := 0;~t8_pc~0 := 0;~m_st~0 := 0;~t1_st~0 := 0;~t2_st~0 := 0;~t3_st~0 := 0;~t4_st~0 := 0;~t5_st~0 := 0;~t6_st~0 := 0;~t7_st~0 := 0;~t8_st~0 := 0;~m_i~0 := 0;~t1_i~0 := 0;~t2_i~0 := 0;~t3_i~0 := 0;~t4_i~0 := 0;~t5_i~0 := 0;~t6_i~0 := 0;~t7_i~0 := 0;~t8_i~0 := 0;~M_E~0 := 2;~T1_E~0 := 2;~T2_E~0 := 2;~T3_E~0 := 2;~T4_E~0 := 2;~T5_E~0 := 2;~T6_E~0 := 2;~T7_E~0 := 2;~T8_E~0 := 2;~E_M~0 := 2;~E_1~0 := 2;~E_2~0 := 2;~E_3~0 := 2;~E_4~0 := 2;~E_5~0 := 2;~E_6~0 := 2;~E_7~0 := 2;~E_8~0 := 2;~token~0 := 0;~local~0 := 0; {358#true} is VALID [2022-02-20 19:54:30,183 INFO L290 TraceCheckUtils]: 1: Hoare triple {358#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet40#1, main_#t~ret41#1, main_#t~ret42#1;assume -2147483648 <= main_#t~nondet40#1 && main_#t~nondet40#1 <= 2147483647; {358#true} is VALID [2022-02-20 19:54:30,184 INFO L290 TraceCheckUtils]: 2: Hoare triple {358#true} assume 0 != main_#t~nondet40#1;havoc main_#t~nondet40#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_~__retres1~3#1;havoc main1_~__retres1~3#1;assume { :begin_inline_init_model1 } true;~q_free~0 := 1;~q_write_ev~0 := 2;~q_read_ev~0 := ~q_write_ev~0;~p_num_write~0 := 0;~p_dw_pc~0 := 0;~p_dw_i~0 := 1;~c_num_read~0 := 0;~c_dr_pc~0 := 0;~c_dr_i~0 := 1; {360#(= 1 ~c_dr_i~0)} is VALID [2022-02-20 19:54:30,184 INFO L290 TraceCheckUtils]: 3: Hoare triple {360#(= 1 ~c_dr_i~0)} assume { :end_inline_init_model1 } true;assume { :begin_inline_start_simulation1 } true;havoc start_simulation1_#t~ret12#1, start_simulation1_~kernel_st~0#1, start_simulation1_~tmp~3#1;havoc start_simulation1_~kernel_st~0#1;havoc start_simulation1_~tmp~3#1;start_simulation1_~kernel_st~0#1 := 0;assume { :begin_inline_init_threads1 } true; {360#(= 1 ~c_dr_i~0)} is VALID [2022-02-20 19:54:30,185 INFO L290 TraceCheckUtils]: 4: Hoare triple {360#(= 1 ~c_dr_i~0)} assume 1 == ~p_dw_i~0;~p_dw_st~0 := 0; {360#(= 1 ~c_dr_i~0)} is VALID [2022-02-20 19:54:30,185 INFO L290 TraceCheckUtils]: 5: Hoare triple {360#(= 1 ~c_dr_i~0)} assume !(1 == ~c_dr_i~0);~c_dr_st~0 := 2; {359#false} is VALID [2022-02-20 19:54:30,185 INFO L290 TraceCheckUtils]: 6: Hoare triple {359#false} assume { :end_inline_init_threads1 } true; {359#false} is VALID [2022-02-20 19:54:30,185 INFO L290 TraceCheckUtils]: 7: Hoare triple {359#false} assume !false; {359#false} is VALID [2022-02-20 19:54:30,186 INFO L290 TraceCheckUtils]: 8: Hoare triple {359#false} start_simulation1_~kernel_st~0#1 := 1;assume { :begin_inline_eval1 } true;havoc eval1_#t~ret8#1, eval1_#t~nondet9#1, eval1_#t~nondet10#1, eval1_~tmp~1#1, eval1_~tmp___0~1#1, eval1_~tmp___1~0#1;havoc eval1_~tmp~1#1;havoc eval1_~tmp___0~1#1;havoc eval1_~tmp___1~0#1; {359#false} is VALID [2022-02-20 19:54:30,186 INFO L290 TraceCheckUtils]: 9: Hoare triple {359#false} assume !false; {359#false} is VALID [2022-02-20 19:54:30,186 INFO L272 TraceCheckUtils]: 10: Hoare triple {359#false} call eval1_#t~ret8#1 := exists_runnable_thread1(); {358#true} is VALID [2022-02-20 19:54:30,186 INFO L290 TraceCheckUtils]: 11: Hoare triple {358#true} havoc ~__retres1~2; {358#true} is VALID [2022-02-20 19:54:30,186 INFO L290 TraceCheckUtils]: 12: Hoare triple {358#true} assume 0 == ~p_dw_st~0;~__retres1~2 := 1; {358#true} is VALID [2022-02-20 19:54:30,187 INFO L290 TraceCheckUtils]: 13: Hoare triple {358#true} #res := ~__retres1~2; {358#true} is VALID [2022-02-20 19:54:30,187 INFO L290 TraceCheckUtils]: 14: Hoare triple {358#true} assume true; {358#true} is VALID [2022-02-20 19:54:30,187 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {358#true} {359#false} #1375#return; {359#false} is VALID [2022-02-20 19:54:30,188 INFO L290 TraceCheckUtils]: 16: Hoare triple {359#false} assume -2147483648 <= eval1_#t~ret8#1 && eval1_#t~ret8#1 <= 2147483647;eval1_~tmp___1~0#1 := eval1_#t~ret8#1;havoc eval1_#t~ret8#1; {359#false} is VALID [2022-02-20 19:54:30,188 INFO L290 TraceCheckUtils]: 17: Hoare triple {359#false} assume 0 != eval1_~tmp___1~0#1; {359#false} is VALID [2022-02-20 19:54:30,189 INFO L290 TraceCheckUtils]: 18: Hoare triple {359#false} assume 0 == ~p_dw_st~0;assume -2147483648 <= eval1_#t~nondet9#1 && eval1_#t~nondet9#1 <= 2147483647;eval1_~tmp~1#1 := eval1_#t~nondet9#1;havoc eval1_#t~nondet9#1; {359#false} is VALID [2022-02-20 19:54:30,190 INFO L290 TraceCheckUtils]: 19: Hoare triple {359#false} assume !(0 != eval1_~tmp~1#1); {359#false} is VALID [2022-02-20 19:54:30,190 INFO L272 TraceCheckUtils]: 20: Hoare triple {359#false} call error1(); {359#false} is VALID [2022-02-20 19:54:30,190 INFO L290 TraceCheckUtils]: 21: Hoare triple {359#false} assume !false; {359#false} is VALID [2022-02-20 19:54:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:54:30,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:54:30,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899830858] [2022-02-20 19:54:30,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899830858] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:54:30,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:54:30,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 19:54:30,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929871705] [2022-02-20 19:54:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:54:30,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:30,200 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:54:30,202 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:30,221 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:30,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:54:30,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:54:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:54:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:30,245 INFO L87 Difference]: Start difference. First operand has 355 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 320 states have internal predecessors, (512), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:30,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:30,729 INFO L93 Difference]: Finished difference Result 688 states and 1102 transitions. [2022-02-20 19:54:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:54:30,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:54:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1102 transitions. [2022-02-20 19:54:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1102 transitions. [2022-02-20 19:54:30,784 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 1102 transitions. [2022-02-20 19:54:31,423 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1102 edges. 1102 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:31,440 INFO L225 Difference]: With dead ends: 688 [2022-02-20 19:54:31,440 INFO L226 Difference]: Without dead ends: 345 [2022-02-20 19:54:31,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:31,445 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 94 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:54:31,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 967 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:54:31,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-02-20 19:54:31,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-02-20 19:54:31,476 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:54:31,478 INFO L82 GeneralOperation]: Start isEquivalent. First operand 345 states. Second operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:31,479 INFO L74 IsIncluded]: Start isIncluded. First operand 345 states. Second operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:31,481 INFO L87 Difference]: Start difference. First operand 345 states. Second operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:31,495 INFO L93 Difference]: Finished difference Result 345 states and 524 transitions. [2022-02-20 19:54:31,495 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 524 transitions. [2022-02-20 19:54:31,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:31,498 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:31,499 INFO L74 IsIncluded]: Start isIncluded. First operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand 345 states. [2022-02-20 19:54:31,500 INFO L87 Difference]: Start difference. First operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand 345 states. [2022-02-20 19:54:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:31,512 INFO L93 Difference]: Finished difference Result 345 states and 524 transitions. [2022-02-20 19:54:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 524 transitions. [2022-02-20 19:54:31,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:31,513 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:31,513 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:54:31,513 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:54:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 524 transitions. [2022-02-20 19:54:31,527 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 524 transitions. Word has length 22 [2022-02-20 19:54:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:54:31,528 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 524 transitions. [2022-02-20 19:54:31,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 524 transitions. [2022-02-20 19:54:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:31,529 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:31,529 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 19:54:31,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:54:31,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:31,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1487439330, now seen corresponding path program 1 times [2022-02-20 19:54:31,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:31,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420826877] [2022-02-20 19:54:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:31,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:31,549 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:31,575 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 19:54:31,576 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:31,577 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:31,578 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:31,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 19:54:31,580 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 19:54:31,582 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:31,604 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:31,604 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 19:54:31,607 INFO L158 Benchmark]: Toolchain (without parser) took 3026.19ms. Allocated memory was 90.2MB in the beginning and 151.0MB in the end (delta: 60.8MB). Free memory was 57.4MB in the beginning and 74.2MB in the end (delta: -16.8MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,607 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:31,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.42ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 57.1MB in the beginning and 75.4MB in the end (delta: -18.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.20ms. Allocated memory is still 111.1MB. Free memory was 75.4MB in the beginning and 70.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,608 INFO L158 Benchmark]: Boogie Preprocessor took 52.60ms. Allocated memory is still 111.1MB. Free memory was 70.1MB in the beginning and 66.3MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,609 INFO L158 Benchmark]: RCFGBuilder took 873.22ms. Allocated memory is still 111.1MB. Free memory was 66.3MB in the beginning and 77.4MB in the end (delta: -11.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,609 INFO L158 Benchmark]: TraceAbstraction took 1691.15ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 76.9MB in the beginning and 74.2MB in the end (delta: 2.7MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2022-02-20 19:54:31,611 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 0.17ms. Allocated memory is still 90.2MB. Free memory was 45.5MB in the beginning and 45.5MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.42ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 57.1MB in the beginning and 75.4MB in the end (delta: -18.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.20ms. Allocated memory is still 111.1MB. Free memory was 75.4MB in the beginning and 70.5MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.60ms. Allocated memory is still 111.1MB. Free memory was 70.1MB in the beginning and 66.3MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 873.22ms. Allocated memory is still 111.1MB. Free memory was 66.3MB in the beginning and 77.4MB in the end (delta: -11.1MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1691.15ms. Allocated memory was 111.1MB in the beginning and 151.0MB in the end (delta: 39.8MB). Free memory was 76.9MB in the beginning and 74.2MB in the end (delta: 2.7MB). Peak memory consumption was 41.0MB. 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 19:54:31,642 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.08.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 f3afbfdd07db0f20c72e9ddbb9df55e00686c374f25f62c43f14136ff2ce41ec --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:33,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:33,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:33,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:33,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:33,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:33,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:33,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:33,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:33,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:33,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:33,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:33,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:33,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:33,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:33,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:33,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:33,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:33,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:33,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:33,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:33,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:33,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:33,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:33,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:33,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:33,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:33,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:33,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:33,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:33,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:33,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:33,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:33,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:33,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:33,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:33,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:33,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:33,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:33,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:33,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:33,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 19:54:33,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:33,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:33,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:33,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:33,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:33,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:33,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:33,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:33,255 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:33,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:33,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:33,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:33,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:33,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:33,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:33,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:33,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 19:54:33,257 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 19:54:33,257 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 19:54:33,257 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:33,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:33,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:33,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:33,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:33,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:33,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:33,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:33,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:33,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:33,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:33,258 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 19:54:33,259 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 19:54:33,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:33,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:33,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:33,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 19:54:33,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3afbfdd07db0f20c72e9ddbb9df55e00686c374f25f62c43f14136ff2ce41ec [2022-02-20 19:54:33,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:33,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:33,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:33,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:33,520 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:33,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.08.cil-1.c [2022-02-20 19:54:33,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75eb5215/15293ecde5ef4386859449e27bcb1dcc/FLAG28d10df66 [2022-02-20 19:54:33,958 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:33,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.08.cil-1.c [2022-02-20 19:54:33,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75eb5215/15293ecde5ef4386859449e27bcb1dcc/FLAG28d10df66 [2022-02-20 19:54:33,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75eb5215/15293ecde5ef4386859449e27bcb1dcc [2022-02-20 19:54:33,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:33,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:33,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:33,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:33,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:33,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:33" (1/1) ... [2022-02-20 19:54:33,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a343c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:33, skipping insertion in model container [2022-02-20 19:54:33,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:33" (1/1) ... [2022-02-20 19:54:33,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:34,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:34,159 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.08.cil-1.c[913,926] [2022-02-20 19:54:34,232 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.08.cil-1.c[5994,6007] [2022-02-20 19:54:34,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:34,313 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:34,320 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.08.cil-1.c[913,926] [2022-02-20 19:54:34,330 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.08.cil-1.c[5994,6007] [2022-02-20 19:54:34,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:34,377 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:34,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34 WrapperNode [2022-02-20 19:54:34,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:34,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:34,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:34,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:34,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,454 INFO L137 Inliner]: procedures = 65, calls = 73, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 791 [2022-02-20 19:54:34,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:34,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:34,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:34,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:34,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:34,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:34,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:34,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:34,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (1/1) ... [2022-02-20 19:54:34,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:34,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:34,510 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 19:54:34,542 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 19:54:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:34,552 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 19:54:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:34,662 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:34,663 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:35,286 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:35,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:35,303 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-02-20 19:54:35,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:35 BoogieIcfgContainer [2022-02-20 19:54:35,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:35,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:35,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:35,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:35,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:33" (1/3) ... [2022-02-20 19:54:35,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6ec873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:35, skipping insertion in model container [2022-02-20 19:54:35,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:34" (2/3) ... [2022-02-20 19:54:35,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6ec873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:35, skipping insertion in model container [2022-02-20 19:54:35,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:35" (3/3) ... [2022-02-20 19:54:35,316 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.08.cil-1.c [2022-02-20 19:54:35,323 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:35,324 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:35,357 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:35,361 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 19:54:35,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 355 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 320 states have internal predecessors, (512), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-02-20 19:54:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:35,382 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:35,383 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 19:54:35,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1219180064, now seen corresponding path program 1 times [2022-02-20 19:54:35,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:35,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734804953] [2022-02-20 19:54:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:35,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:35,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:35,400 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 19:54:35,409 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 19:54:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:35,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2022-02-20 19:54:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:35,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 19:54:35,579 INFO L290 TraceCheckUtils]: 0: Hoare triple {358#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(19bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32);~q_buf_0~0 := 0bv32;~q_free~0 := 0bv32;~q_read_ev~0 := 0bv32;~q_write_ev~0 := 0bv32;~p_num_write~0 := 0bv32;~p_last_write~0 := 0bv32;~p_dw_st~0 := 0bv32;~p_dw_pc~0 := 0bv32;~p_dw_i~0 := 0bv32;~c_num_read~0 := 0bv32;~c_last_read~0 := 0bv32;~c_dr_st~0 := 0bv32;~c_dr_pc~0 := 0bv32;~c_dr_i~0 := 0bv32;~a_t~0 := 0bv32;~m_pc~0 := 0bv32;~t1_pc~0 := 0bv32;~t2_pc~0 := 0bv32;~t3_pc~0 := 0bv32;~t4_pc~0 := 0bv32;~t5_pc~0 := 0bv32;~t6_pc~0 := 0bv32;~t7_pc~0 := 0bv32;~t8_pc~0 := 0bv32;~m_st~0 := 0bv32;~t1_st~0 := 0bv32;~t2_st~0 := 0bv32;~t3_st~0 := 0bv32;~t4_st~0 := 0bv32;~t5_st~0 := 0bv32;~t6_st~0 := 0bv32;~t7_st~0 := 0bv32;~t8_st~0 := 0bv32;~m_i~0 := 0bv32;~t1_i~0 := 0bv32;~t2_i~0 := 0bv32;~t3_i~0 := 0bv32;~t4_i~0 := 0bv32;~t5_i~0 := 0bv32;~t6_i~0 := 0bv32;~t7_i~0 := 0bv32;~t8_i~0 := 0bv32;~M_E~0 := 2bv32;~T1_E~0 := 2bv32;~T2_E~0 := 2bv32;~T3_E~0 := 2bv32;~T4_E~0 := 2bv32;~T5_E~0 := 2bv32;~T6_E~0 := 2bv32;~T7_E~0 := 2bv32;~T8_E~0 := 2bv32;~E_M~0 := 2bv32;~E_1~0 := 2bv32;~E_2~0 := 2bv32;~E_3~0 := 2bv32;~E_4~0 := 2bv32;~E_5~0 := 2bv32;~E_6~0 := 2bv32;~E_7~0 := 2bv32;~E_8~0 := 2bv32;~token~0 := 0bv32;~local~0 := 0bv32; {358#true} is VALID [2022-02-20 19:54:35,580 INFO L290 TraceCheckUtils]: 1: Hoare triple {358#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet40#1, main_#t~ret41#1, main_#t~ret42#1; {358#true} is VALID [2022-02-20 19:54:35,580 INFO L290 TraceCheckUtils]: 2: Hoare triple {358#true} assume 0bv32 != main_#t~nondet40#1;havoc main_#t~nondet40#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_~__retres1~3#1;havoc main1_~__retres1~3#1;assume { :begin_inline_init_model1 } true;~q_free~0 := 1bv32;~q_write_ev~0 := 2bv32;~q_read_ev~0 := ~q_write_ev~0;~p_num_write~0 := 0bv32;~p_dw_pc~0 := 0bv32;~p_dw_i~0 := 1bv32;~c_num_read~0 := 0bv32;~c_dr_pc~0 := 0bv32;~c_dr_i~0 := 1bv32; {369#(= ~c_dr_i~0 (_ bv1 32))} is VALID [2022-02-20 19:54:35,581 INFO L290 TraceCheckUtils]: 3: Hoare triple {369#(= ~c_dr_i~0 (_ bv1 32))} assume { :end_inline_init_model1 } true;assume { :begin_inline_start_simulation1 } true;havoc start_simulation1_#t~ret12#1, start_simulation1_~kernel_st~0#1, start_simulation1_~tmp~3#1;havoc start_simulation1_~kernel_st~0#1;havoc start_simulation1_~tmp~3#1;start_simulation1_~kernel_st~0#1 := 0bv32;assume { :begin_inline_init_threads1 } true; {369#(= ~c_dr_i~0 (_ bv1 32))} is VALID [2022-02-20 19:54:35,581 INFO L290 TraceCheckUtils]: 4: Hoare triple {369#(= ~c_dr_i~0 (_ bv1 32))} assume 1bv32 == ~p_dw_i~0;~p_dw_st~0 := 0bv32; {369#(= ~c_dr_i~0 (_ bv1 32))} is VALID [2022-02-20 19:54:35,582 INFO L290 TraceCheckUtils]: 5: Hoare triple {369#(= ~c_dr_i~0 (_ bv1 32))} assume !(1bv32 == ~c_dr_i~0);~c_dr_st~0 := 2bv32; {359#false} is VALID [2022-02-20 19:54:35,582 INFO L290 TraceCheckUtils]: 6: Hoare triple {359#false} assume { :end_inline_init_threads1 } true; {359#false} is VALID [2022-02-20 19:54:35,582 INFO L290 TraceCheckUtils]: 7: Hoare triple {359#false} assume !false; {359#false} is VALID [2022-02-20 19:54:35,582 INFO L290 TraceCheckUtils]: 8: Hoare triple {359#false} start_simulation1_~kernel_st~0#1 := 1bv32;assume { :begin_inline_eval1 } true;havoc eval1_#t~ret8#1, eval1_#t~nondet9#1, eval1_#t~nondet10#1, eval1_~tmp~1#1, eval1_~tmp___0~1#1, eval1_~tmp___1~0#1;havoc eval1_~tmp~1#1;havoc eval1_~tmp___0~1#1;havoc eval1_~tmp___1~0#1; {359#false} is VALID [2022-02-20 19:54:35,583 INFO L290 TraceCheckUtils]: 9: Hoare triple {359#false} assume !false; {359#false} is VALID [2022-02-20 19:54:35,583 INFO L272 TraceCheckUtils]: 10: Hoare triple {359#false} call eval1_#t~ret8#1 := exists_runnable_thread1(); {359#false} is VALID [2022-02-20 19:54:35,583 INFO L290 TraceCheckUtils]: 11: Hoare triple {359#false} havoc ~__retres1~2; {359#false} is VALID [2022-02-20 19:54:35,596 INFO L290 TraceCheckUtils]: 12: Hoare triple {359#false} assume 0bv32 == ~p_dw_st~0;~__retres1~2 := 1bv32; {359#false} is VALID [2022-02-20 19:54:35,597 INFO L290 TraceCheckUtils]: 13: Hoare triple {359#false} #res := ~__retres1~2; {359#false} is VALID [2022-02-20 19:54:35,597 INFO L290 TraceCheckUtils]: 14: Hoare triple {359#false} assume true; {359#false} is VALID [2022-02-20 19:54:35,597 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {359#false} {359#false} #1375#return; {359#false} is VALID [2022-02-20 19:54:35,597 INFO L290 TraceCheckUtils]: 16: Hoare triple {359#false} eval1_~tmp___1~0#1 := eval1_#t~ret8#1;havoc eval1_#t~ret8#1; {359#false} is VALID [2022-02-20 19:54:35,597 INFO L290 TraceCheckUtils]: 17: Hoare triple {359#false} assume 0bv32 != eval1_~tmp___1~0#1; {359#false} is VALID [2022-02-20 19:54:35,598 INFO L290 TraceCheckUtils]: 18: Hoare triple {359#false} assume 0bv32 == ~p_dw_st~0;eval1_~tmp~1#1 := eval1_#t~nondet9#1;havoc eval1_#t~nondet9#1; {359#false} is VALID [2022-02-20 19:54:35,598 INFO L290 TraceCheckUtils]: 19: Hoare triple {359#false} assume !(0bv32 != eval1_~tmp~1#1); {359#false} is VALID [2022-02-20 19:54:35,598 INFO L272 TraceCheckUtils]: 20: Hoare triple {359#false} call error1(); {359#false} is VALID [2022-02-20 19:54:35,598 INFO L290 TraceCheckUtils]: 21: Hoare triple {359#false} assume !false; {359#false} is VALID [2022-02-20 19:54:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:54:35,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 19:54:35,599 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 19:54:35,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734804953] [2022-02-20 19:54:35,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734804953] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:54:35,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:54:35,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 19:54:35,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404889396] [2022-02-20 19:54:35,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:54:35,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:35,611 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:54:35,613 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:35,642 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:35,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:54:35,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 19:54:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:54:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:35,660 INFO L87 Difference]: Start difference. First operand has 355 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 320 states have internal predecessors, (512), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:36,263 INFO L93 Difference]: Finished difference Result 688 states and 1102 transitions. [2022-02-20 19:54:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:54:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:54:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1102 transitions. [2022-02-20 19:54:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1102 transitions. [2022-02-20 19:54:36,292 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 1102 transitions. [2022-02-20 19:54:37,034 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1102 edges. 1102 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:37,064 INFO L225 Difference]: With dead ends: 688 [2022-02-20 19:54:37,065 INFO L226 Difference]: Without dead ends: 345 [2022-02-20 19:54:37,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:37,076 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 94 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:54:37,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 967 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:54:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-02-20 19:54:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-02-20 19:54:37,131 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:54:37,136 INFO L82 GeneralOperation]: Start isEquivalent. First operand 345 states. Second operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:37,140 INFO L74 IsIncluded]: Start isIncluded. First operand 345 states. Second operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:37,141 INFO L87 Difference]: Start difference. First operand 345 states. Second operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:37,158 INFO L93 Difference]: Finished difference Result 345 states and 524 transitions. [2022-02-20 19:54:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 524 transitions. [2022-02-20 19:54:37,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:37,166 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:37,167 INFO L74 IsIncluded]: Start isIncluded. First operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand 345 states. [2022-02-20 19:54:37,168 INFO L87 Difference]: Start difference. First operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand 345 states. [2022-02-20 19:54:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:37,188 INFO L93 Difference]: Finished difference Result 345 states and 524 transitions. [2022-02-20 19:54:37,188 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 524 transitions. [2022-02-20 19:54:37,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:37,189 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:37,189 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:54:37,189 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:54:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 310 states have internal predecessors, (469), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 524 transitions. [2022-02-20 19:54:37,205 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 524 transitions. Word has length 22 [2022-02-20 19:54:37,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:54:37,205 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 524 transitions. [2022-02-20 19:54:37,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:37,206 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 524 transitions. [2022-02-20 19:54:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:37,206 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:37,206 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 19:54:37,218 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 19:54:37,416 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 19:54:37,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1487439330, now seen corresponding path program 1 times [2022-02-20 19:54:37,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:37,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450569] [2022-02-20 19:54:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:37,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:37,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 19:54:37,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 19:54:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:37,475 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:37,546 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 19:54:37,546 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:37,547 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:37,549 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:37,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-02-20 19:54:37,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 19:54:37,759 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 19:54:37,761 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:37,787 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:37,793 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 19:54:37,796 INFO L158 Benchmark]: Toolchain (without parser) took 3809.68ms. Allocated memory was 58.7MB in the beginning and 90.2MB in the end (delta: 31.5MB). Free memory was 36.4MB in the beginning and 39.2MB in the end (delta: -2.8MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:37,796 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:37,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.21ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 28.9MB in the end (delta: 7.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:37,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.29ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 55.4MB in the end (delta: -26.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-02-20 19:54:37,798 INFO L158 Benchmark]: Boogie Preprocessor took 31.07ms. Allocated memory is still 73.4MB. Free memory was 55.4MB in the beginning and 51.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:37,798 INFO L158 Benchmark]: RCFGBuilder took 817.85ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 30.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-02-20 19:54:37,798 INFO L158 Benchmark]: TraceAbstraction took 2483.14ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 51.4MB in the beginning and 39.2MB in the end (delta: 12.2MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2022-02-20 19:54:37,800 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 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.21ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 28.9MB in the end (delta: 7.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.29ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 55.4MB in the end (delta: -26.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.07ms. Allocated memory is still 73.4MB. Free memory was 55.4MB in the beginning and 51.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 817.85ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 30.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2483.14ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 51.4MB in the beginning and 39.2MB in the end (delta: 12.2MB). Peak memory consumption was 27.9MB. 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 19:54:37,836 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