./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.05.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.05.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 9d4bc18aefc7d5cf8a6801b407c7ea85d9f7dfe6af9e54139938035f3045aafe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:18,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:18,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:18,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:18,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:18,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:18,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:18,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:18,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:18,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:18,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:18,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:18,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:18,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:18,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:18,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:18,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:18,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:18,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:18,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:18,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:18,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:18,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:18,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:18,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:18,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:18,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:18,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:18,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:18,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:18,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:18,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:18,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:18,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:18,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:18,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:18,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:18,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:18,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:18,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:18,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:18,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:54:18,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:18,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:18,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:18,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:18,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:18,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:18,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:18,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:18,796 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:18,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:18,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:18,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:54:18,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:18,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:18,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:18,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:18,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:18,798 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:18,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:18,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:18,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:18,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:18,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:18,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:18,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:18,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:18,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:18,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:18,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:54:18,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:54:18,802 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:18,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:18,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:18,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d4bc18aefc7d5cf8a6801b407c7ea85d9f7dfe6af9e54139938035f3045aafe [2022-02-20 19:54:19,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:19,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:19,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:19,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:19,042 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:19,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.05.cil-1.c [2022-02-20 19:54:19,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5f21103/eac50e04b88848c6a69985deb8bb792e/FLAG2bba921bf [2022-02-20 19:54:19,528 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:19,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.05.cil-1.c [2022-02-20 19:54:19,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5f21103/eac50e04b88848c6a69985deb8bb792e/FLAG2bba921bf [2022-02-20 19:54:19,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5f21103/eac50e04b88848c6a69985deb8bb792e [2022-02-20 19:54:19,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:19,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:19,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:19,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:19,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:19,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:19,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49332754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19, skipping insertion in model container [2022-02-20 19:54:19,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:19,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:19,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:19,735 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.05.cil-1.c[913,926] [2022-02-20 19:54:19,790 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.05.cil-1.c[5994,6007] [2022-02-20 19:54:19,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:19,877 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:19,887 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.05.cil-1.c[913,926] [2022-02-20 19:54:19,913 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.05.cil-1.c[5994,6007] [2022-02-20 19:54:19,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:19,992 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:19,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19 WrapperNode [2022-02-20 19:54:19,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:19,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:19,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:19,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:20,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,078 INFO L137 Inliner]: procedures = 58, calls = 64, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 650 [2022-02-20 19:54:20,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:20,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:20,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:20,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:20,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:20,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:20,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:20,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:20,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (1/1) ... [2022-02-20 19:54:20,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:20,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:20,184 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 19:54:20,193 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 19:54:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:54:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:20,217 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:20,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:20,218 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:20,218 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:20,324 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:20,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:21,017 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:21,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:21,038 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-02-20 19:54:21,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:21 BoogieIcfgContainer [2022-02-20 19:54:21,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:21,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:21,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:21,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:21,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:19" (1/3) ... [2022-02-20 19:54:21,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e48e52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:21, skipping insertion in model container [2022-02-20 19:54:21,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:19" (2/3) ... [2022-02-20 19:54:21,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e48e52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:21, skipping insertion in model container [2022-02-20 19:54:21,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:21" (3/3) ... [2022-02-20 19:54:21,051 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.05.cil-1.c [2022-02-20 19:54:21,059 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:21,059 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:21,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:21,107 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 19:54:21,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 248 states have internal predecessors, (389), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:21,142 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:21,142 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 19:54:21,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:21,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1212464719, now seen corresponding path program 1 times [2022-02-20 19:54:21,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:21,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661082397] [2022-02-20 19:54:21,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:21,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:21,284 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:21,349 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 19:54:21,351 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:21,352 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:21,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:21,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:54:21,363 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:21,366 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:21,411 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:21,412 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 19:54:21,415 INFO L158 Benchmark]: Toolchain (without parser) took 1860.84ms. Allocated memory is still 96.5MB. Free memory was 74.4MB in the beginning and 35.5MB in the end (delta: 38.9MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-02-20 19:54:21,416 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:21,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.71ms. Allocated memory is still 96.5MB. Free memory was 77.0MB in the beginning and 65.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 19:54:21,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.75ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 61.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:21,419 INFO L158 Benchmark]: Boogie Preprocessor took 74.06ms. Allocated memory is still 96.5MB. Free memory was 61.7MB in the beginning and 58.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:21,421 INFO L158 Benchmark]: RCFGBuilder took 887.73ms. Allocated memory is still 96.5MB. Free memory was 58.3MB in the beginning and 59.5MB in the end (delta: -1.2MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2022-02-20 19:54:21,425 INFO L158 Benchmark]: TraceAbstraction took 370.23ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 35.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:21,439 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 0.19ms. Allocated memory is still 79.7MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.71ms. Allocated memory is still 96.5MB. Free memory was 77.0MB in the beginning and 65.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.75ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 61.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.06ms. Allocated memory is still 96.5MB. Free memory was 61.7MB in the beginning and 58.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 887.73ms. Allocated memory is still 96.5MB. Free memory was 58.3MB in the beginning and 59.5MB in the end (delta: -1.2MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. * TraceAbstraction took 370.23ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 35.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. 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 19:54:21,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.05.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 9d4bc18aefc7d5cf8a6801b407c7ea85d9f7dfe6af9e54139938035f3045aafe --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:23,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:23,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:23,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:23,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:23,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:23,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:23,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:23,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:23,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:23,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:23,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:23,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:23,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:23,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:23,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:23,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:23,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:23,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:23,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:23,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:23,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:23,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:23,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:23,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:23,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:23,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:23,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:23,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:23,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:23,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:23,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:23,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:23,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:23,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:23,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:23,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:23,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:23,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:23,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:23,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:23,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 19:54:23,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:23,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:23,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:23,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:23,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:23,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:23,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:23,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:23,464 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:23,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:23,465 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:23,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:23,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:23,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:23,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:23,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:23,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 19:54:23,467 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 19:54:23,467 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 19:54:23,467 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:23,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:23,468 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:23,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:23,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:23,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:23,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:23,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:23,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:23,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:23,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:23,469 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 19:54:23,470 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 19:54:23,470 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:23,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:23,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:23,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 19:54:23,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d4bc18aefc7d5cf8a6801b407c7ea85d9f7dfe6af9e54139938035f3045aafe [2022-02-20 19:54:23,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:23,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:23,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:23,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:23,821 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:23,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.05.cil-1.c [2022-02-20 19:54:23,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b122c07c4/bd2d90826be14691b7587ae52c82abd5/FLAG6c87d573e [2022-02-20 19:54:24,289 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:24,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.05.cil-1.c [2022-02-20 19:54:24,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b122c07c4/bd2d90826be14691b7587ae52c82abd5/FLAG6c87d573e [2022-02-20 19:54:24,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b122c07c4/bd2d90826be14691b7587ae52c82abd5 [2022-02-20 19:54:24,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:24,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:24,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:24,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:24,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:24,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:24" (1/1) ... [2022-02-20 19:54:24,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37025fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:24, skipping insertion in model container [2022-02-20 19:54:24,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:24" (1/1) ... [2022-02-20 19:54:24,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:24,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:24,863 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.05.cil-1.c[913,926] [2022-02-20 19:54:24,921 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.05.cil-1.c[5994,6007] [2022-02-20 19:54:25,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:25,079 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:25,093 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.05.cil-1.c[913,926] [2022-02-20 19:54:25,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.05.cil-1.c[5994,6007] [2022-02-20 19:54:25,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:25,200 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:25,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25 WrapperNode [2022-02-20 19:54:25,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:25,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:25,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:25,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:25,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,295 INFO L137 Inliner]: procedures = 59, calls = 64, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 623 [2022-02-20 19:54:25,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:25,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:25,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:25,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:25,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:25,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:25,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:25,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:25,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (1/1) ... [2022-02-20 19:54:25,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:25,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:25,400 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 19:54:25,411 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 19:54:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:25,430 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:25,430 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 19:54:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:25,550 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:25,554 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:26,168 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:26,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:26,185 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-02-20 19:54:26,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:26 BoogieIcfgContainer [2022-02-20 19:54:26,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:26,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:26,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:26,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:26,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:24" (1/3) ... [2022-02-20 19:54:26,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca6327b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:26, skipping insertion in model container [2022-02-20 19:54:26,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:25" (2/3) ... [2022-02-20 19:54:26,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca6327b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:26, skipping insertion in model container [2022-02-20 19:54:26,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:26" (3/3) ... [2022-02-20 19:54:26,194 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.05.cil-1.c [2022-02-20 19:54:26,201 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:26,201 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:26,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:26,261 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:54:26,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 248 states have internal predecessors, (389), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-20 19:54:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:26,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:26,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:54:26,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1212464719, now seen corresponding path program 1 times [2022-02-20 19:54:26,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:26,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540317979] [2022-02-20 19:54:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:26,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:26,326 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 19:54:26,327 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 19:54:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:26,429 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:26,508 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 19:54:26,509 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:26,510 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:26,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:26,523 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 19:54:26,722 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 19:54:26,726 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 19:54:26,729 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:26,764 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:26,764 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 19:54:26,768 INFO L158 Benchmark]: Toolchain (without parser) took 2117.91ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 27.1MB in the beginning and 43.9MB in the end (delta: -16.8MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:26,768 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 32.0MB in the beginning and 31.9MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:26,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.13ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 26.9MB in the beginning and 47.2MB in the end (delta: -20.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:26,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.41ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 43.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:26,770 INFO L158 Benchmark]: Boogie Preprocessor took 63.18ms. Allocated memory is still 71.3MB. Free memory was 43.2MB in the beginning and 39.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:26,770 INFO L158 Benchmark]: RCFGBuilder took 820.60ms. Allocated memory is still 71.3MB. Free memory was 39.6MB in the beginning and 46.9MB in the end (delta: -7.3MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-02-20 19:54:26,771 INFO L158 Benchmark]: TraceAbstraction took 577.49ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 43.9MB in the end (delta: 2.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-02-20 19:54:26,773 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 0.20ms. Allocated memory is still 50.3MB. Free memory was 32.0MB in the beginning and 31.9MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.13ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 26.9MB in the beginning and 47.2MB in the end (delta: -20.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.41ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 43.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.18ms. Allocated memory is still 71.3MB. Free memory was 43.2MB in the beginning and 39.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 820.60ms. Allocated memory is still 71.3MB. Free memory was 39.6MB in the beginning and 46.9MB in the end (delta: -7.3MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * TraceAbstraction took 577.49ms. Allocated memory is still 71.3MB. Free memory was 46.5MB in the beginning and 43.9MB in the end (delta: 2.6MB). Peak memory consumption was 21.0MB. 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 19:54:26,809 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