./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/Problem05_label45+token_ring.12.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 e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:48:46,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:48:46,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:48:46,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:48:46,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:48:46,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:48:46,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:48:46,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:48:46,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:48:46,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:48:46,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:48:46,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:48:46,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:48:46,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:48:46,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:48:46,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:48:46,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:48:46,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:48:46,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:48:46,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:48:46,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:48:46,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:48:46,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:48:46,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:48:46,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:48:46,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:48:46,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:48:46,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:48:46,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:48:46,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:48:46,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:48:46,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:48:46,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:48:46,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:48:46,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:48:46,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:48:46,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:48:46,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:48:46,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:48:46,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:48:46,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:48:46,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:48:46,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:48:46,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:48:46,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:48:46,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:48:46,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:48:46,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:48:46,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:48:46,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:48:46,921 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:48:46,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:48:46,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:48:46,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:48:46,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:48:46,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:48:46,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:48:46,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:48:46,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:48:46,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:48:46,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:48:46,928 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:48:46,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:48:46,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:48:46,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:48:46,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:48:46,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:46,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:48:46,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:48:46,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:48:46,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:48:46,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:48:46,930 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:48:46,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:48:46,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:48:46,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:48:46,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 [2021-12-15 11:48:47,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:48:47,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:48:47,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:48:47,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:48:47,195 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:48:47,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2021-12-15 11:48:47,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efcadffc6/6ad70e242be74a5699b367ad3bbd79f4/FLAG2d272d59d [2021-12-15 11:48:48,116 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:48:48,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2021-12-15 11:48:48,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efcadffc6/6ad70e242be74a5699b367ad3bbd79f4/FLAG2d272d59d [2021-12-15 11:48:48,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efcadffc6/6ad70e242be74a5699b367ad3bbd79f4 [2021-12-15 11:48:48,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:48:48,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:48:48,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:48,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:48:48,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:48:48,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:48" (1/1) ... [2021-12-15 11:48:48,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768017be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:48, skipping insertion in model container [2021-12-15 11:48:48,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:48" (1/1) ... [2021-12-15 11:48:48,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:48:48,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:50,299 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/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2021-12-15 11:48:50,322 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/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2021-12-15 11:48:50,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:50,553 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:51,301 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/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2021-12-15 11:48:51,307 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/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2021-12-15 11:48:51,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:51,395 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:51,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51 WrapperNode [2021-12-15 11:48:51,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:51,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:51,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:51,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:51,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:51,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:51,851 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2021-12-15 11:48:51,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:51,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:51,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:51,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:51,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:51,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:51,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:51,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:52,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:52,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:52,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:52,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:52,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:52,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:52,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:52,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:52,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:52,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:52,529 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) [2021-12-15 11:48:52,534 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 [2021-12-15 11:48:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:48:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:48:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:48:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:52,722 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:52,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:48:58,396 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:48:58,423 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:48:58,423 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-15 11:48:58,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:58 BoogieIcfgContainer [2021-12-15 11:48:58,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:48:58,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:48:58,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:48:58,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:48:58,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:48" (1/3) ... [2021-12-15 11:48:58,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a9f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:58, skipping insertion in model container [2021-12-15 11:48:58,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51" (2/3) ... [2021-12-15 11:48:58,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a9f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:58, skipping insertion in model container [2021-12-15 11:48:58,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:58" (3/3) ... [2021-12-15 11:48:58,438 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-1.c [2021-12-15 11:48:58,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:48:58,443 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:48:58,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:48:58,511 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 [2021-12-15 11:48:58,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:48:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-15 11:48:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-15 11:48:58,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:48:58,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:48:58,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:48:58,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:48:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2021-12-15 11:48:58,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:48:58,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836772923] [2021-12-15 11:48:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:48:58,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:48:58,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:48:58,669 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 11:48:58,679 INFO L158 Benchmark]: Toolchain (without parser) took 10124.16ms. Allocated memory was 119.5MB in the beginning and 744.5MB in the end (delta: 625.0MB). Free memory was 72.2MB in the beginning and 288.7MB in the end (delta: -216.5MB). Peak memory consumption was 408.9MB. Max. memory is 16.1GB. [2021-12-15 11:48:58,679 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 51.8MB in the beginning and 51.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:48:58,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2841.48ms. Allocated memory was 119.5MB in the beginning and 211.8MB in the end (delta: 92.3MB). Free memory was 72.2MB in the beginning and 102.1MB in the end (delta: -29.9MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. [2021-12-15 11:48:58,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 455.34ms. Allocated memory is still 211.8MB. Free memory was 102.1MB in the beginning and 77.0MB in the end (delta: 25.1MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. [2021-12-15 11:48:58,682 INFO L158 Benchmark]: Boogie Preprocessor took 646.47ms. Allocated memory was 211.8MB in the beginning and 413.1MB in the end (delta: 201.3MB). Free memory was 77.0MB in the beginning and 243.6MB in the end (delta: -166.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-12-15 11:48:58,687 INFO L158 Benchmark]: RCFGBuilder took 5929.80ms. Allocated memory was 413.1MB in the beginning and 744.5MB in the end (delta: 331.4MB). Free memory was 243.6MB in the beginning and 311.7MB in the end (delta: -68.2MB). Peak memory consumption was 372.2MB. Max. memory is 16.1GB. [2021-12-15 11:48:58,688 INFO L158 Benchmark]: TraceAbstraction took 244.53ms. Allocated memory is still 744.5MB. Free memory was 310.7MB in the beginning and 288.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:48:58,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 51.8MB in the beginning and 51.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2841.48ms. Allocated memory was 119.5MB in the beginning and 211.8MB in the end (delta: 92.3MB). Free memory was 72.2MB in the beginning and 102.1MB in the end (delta: -29.9MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 455.34ms. Allocated memory is still 211.8MB. Free memory was 102.1MB in the beginning and 77.0MB in the end (delta: 25.1MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 646.47ms. Allocated memory was 211.8MB in the beginning and 413.1MB in the end (delta: 201.3MB). Free memory was 77.0MB in the beginning and 243.6MB in the end (delta: -166.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * RCFGBuilder took 5929.80ms. Allocated memory was 413.1MB in the beginning and 744.5MB in the end (delta: 331.4MB). Free memory was 243.6MB in the beginning and 311.7MB in the end (delta: -68.2MB). Peak memory consumption was 372.2MB. Max. memory is 16.1GB. * TraceAbstraction took 244.53ms. Allocated memory is still 744.5MB. Free memory was 310.7MB in the beginning and 288.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:48:58,729 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 -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/Problem05_label45+token_ring.12.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 e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:49:00,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:49:00,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:49:00,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:49:00,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:49:00,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:49:00,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:49:00,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:49:00,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:49:00,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:49:00,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:49:00,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:49:00,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:49:00,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:49:00,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:49:00,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:49:00,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:49:00,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:49:00,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:49:00,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:49:00,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:49:00,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:49:00,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:49:00,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:49:00,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:49:00,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:49:00,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:49:00,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:49:00,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:49:00,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:49:00,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:49:00,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:49:00,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:49:00,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:49:00,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:49:00,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:49:00,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:49:00,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:49:00,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:49:00,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:49:00,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:49:00,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:49:00,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:49:00,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:49:00,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:49:00,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:49:00,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:49:00,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:49:00,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:49:00,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:49:00,780 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:49:00,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:49:00,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:49:00,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:49:00,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:49:00,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:49:00,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:49:00,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:49:00,782 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:49:00,782 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:49:00,782 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:49:00,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:49:00,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:49:00,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:49:00,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:49:00,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:49:00,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:49:00,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:49:00,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:00,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:49:00,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:49:00,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:49:00,785 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:49:00,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:49:00,785 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:49:00,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:49:00,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:49:00,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:49:00,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:49:00,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 [2021-12-15 11:49:01,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:49:01,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:49:01,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:49:01,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:49:01,084 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:49:01,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2021-12-15 11:49:01,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491ee483a/0fa2db432d664e0fa1ed3543605adbed/FLAG96fac8e77 [2021-12-15 11:49:02,081 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:49:02,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2021-12-15 11:49:02,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491ee483a/0fa2db432d664e0fa1ed3543605adbed/FLAG96fac8e77 [2021-12-15 11:49:02,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491ee483a/0fa2db432d664e0fa1ed3543605adbed [2021-12-15 11:49:02,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:49:02,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:49:02,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:02,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:49:02,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:49:02,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:02" (1/1) ... [2021-12-15 11:49:02,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e32ee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:02, skipping insertion in model container [2021-12-15 11:49:02,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:02" (1/1) ... [2021-12-15 11:49:02,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:49:02,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:49:03,851 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/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2021-12-15 11:49:03,876 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/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2021-12-15 11:49:04,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:04,117 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:49:04,870 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/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2021-12-15 11:49:04,880 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/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2021-12-15 11:49:04,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:49:04,967 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:49:04,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04 WrapperNode [2021-12-15 11:49:04,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:04,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:49:04,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:49:04,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:49:04,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,445 INFO L137 Inliner]: procedures = 69, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13161 [2021-12-15 11:49:05,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:49:05,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:49:05,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:49:05,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:49:05,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:05,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:49:05,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:49:05,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:49:05,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:49:05,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (1/1) ... [2021-12-15 11:49:06,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:06,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:49:06,044 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) [2021-12-15 11:49:06,065 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 [2021-12-15 11:49:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:49:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:49:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:49:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:49:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:49:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:49:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:49:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:49:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:49:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:49:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:49:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:49:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:49:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:49:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:49:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:49:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:49:06,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:49:06,328 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:49:06,341 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:49:14,121 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:49:14,147 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:49:14,148 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-15 11:49:14,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:14 BoogieIcfgContainer [2021-12-15 11:49:14,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:49:14,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:49:14,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:49:14,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:49:14,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:49:02" (1/3) ... [2021-12-15 11:49:14,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d747dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:14, skipping insertion in model container [2021-12-15 11:49:14,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:04" (2/3) ... [2021-12-15 11:49:14,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d747dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:14, skipping insertion in model container [2021-12-15 11:49:14,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:14" (3/3) ... [2021-12-15 11:49:14,163 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-1.c [2021-12-15 11:49:14,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:49:14,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:49:14,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:49:14,240 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 [2021-12-15 11:49:14,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:49:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-15 11:49:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-15 11:49:14,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:49:14,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:49:14,319 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:49:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:49:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2021-12-15 11:49:14,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:49:14,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656065182] [2021-12-15 11:49:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:49:14,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:49:14,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:49:14,412 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) [2021-12-15 11:49:14,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:49:14,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:49:14,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:49:14,683 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 11:49:14,687 INFO L158 Benchmark]: Toolchain (without parser) took 12510.66ms. Allocated memory was 62.9MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 28.3MB in the beginning and 975.2MB in the end (delta: -946.9MB). Peak memory consumption was 430.3MB. Max. memory is 16.1GB. [2021-12-15 11:49:14,688 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 43.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:49:14,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2789.54ms. Allocated memory was 62.9MB in the beginning and 285.2MB in the end (delta: 222.3MB). Free memory was 28.1MB in the beginning and 177.5MB in the end (delta: -149.4MB). Peak memory consumption was 102.9MB. Max. memory is 16.1GB. [2021-12-15 11:49:14,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 477.52ms. Allocated memory is still 285.2MB. Free memory was 177.5MB in the beginning and 146.3MB in the end (delta: 31.2MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. [2021-12-15 11:49:14,690 INFO L158 Benchmark]: Boogie Preprocessor took 546.40ms. Allocated memory is still 285.2MB. Free memory was 146.3MB in the beginning and 124.3MB in the end (delta: 22.0MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2021-12-15 11:49:14,691 INFO L158 Benchmark]: RCFGBuilder took 8159.07ms. Allocated memory was 285.2MB in the beginning and 1.2GB in the end (delta: 885.0MB). Free memory was 124.3MB in the beginning and 735.4MB in the end (delta: -611.1MB). Peak memory consumption was 276.8MB. Max. memory is 16.1GB. [2021-12-15 11:49:14,692 INFO L158 Benchmark]: TraceAbstraction took 528.93ms. Allocated memory is still 1.2GB. Free memory was 735.4MB in the beginning and 975.2MB in the end (delta: -239.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2021-12-15 11:49:14,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 43.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2789.54ms. Allocated memory was 62.9MB in the beginning and 285.2MB in the end (delta: 222.3MB). Free memory was 28.1MB in the beginning and 177.5MB in the end (delta: -149.4MB). Peak memory consumption was 102.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 477.52ms. Allocated memory is still 285.2MB. Free memory was 177.5MB in the beginning and 146.3MB in the end (delta: 31.2MB). Peak memory consumption was 87.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 546.40ms. Allocated memory is still 285.2MB. Free memory was 146.3MB in the beginning and 124.3MB in the end (delta: 22.0MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. * RCFGBuilder took 8159.07ms. Allocated memory was 285.2MB in the beginning and 1.2GB in the end (delta: 885.0MB). Free memory was 124.3MB in the beginning and 735.4MB in the end (delta: -611.1MB). Peak memory consumption was 276.8MB. Max. memory is 16.1GB. * TraceAbstraction took 528.93ms. Allocated memory is still 1.2GB. Free memory was 735.4MB in the beginning and 975.2MB in the end (delta: -239.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:49:14,721 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: UnsupportedOperationException: Set is immutable