./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.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_label49+token_ring.13.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 21d4f13e72175539cc78aacb8d1d416269d0755bd0c7a4b3f37d9d8805a7ca70 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:51:37,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:51:37,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:51:37,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:51:37,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:51:37,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:51:37,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:51:37,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:51:37,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:51:37,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:51:37,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:51:37,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:51:37,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:51:37,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:51:37,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:51:37,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:51:37,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:51:37,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:51:37,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:51:37,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:51:37,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:51:37,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:51:37,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:51:37,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:51:37,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:51:37,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:51:37,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:51:37,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:51:37,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:51:37,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:51:37,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:51:37,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:51:37,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:51:37,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:51:37,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:51:37,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:51:37,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:51:37,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:51:37,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:51:37,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:51:37,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:51:37,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:51:37,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:51:37,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:51:37,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:51:37,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:51:37,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:51:37,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:51:37,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:51:37,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:51:37,461 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:51:37,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:51:37,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:51:37,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:51:37,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:51:37,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:51:37,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:51:37,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:51:37,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:37,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:51:37,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:51:37,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:51:37,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:51:37,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:51:37,464 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:51:37,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:51:37,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:51:37,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:51:37,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21d4f13e72175539cc78aacb8d1d416269d0755bd0c7a4b3f37d9d8805a7ca70 [2021-12-15 11:51:37,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:51:37,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:51:37,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:51:37,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:51:37,676 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:51:37,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c [2021-12-15 11:51:37,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d58b53b/4f15a0eeafb8463b9aef17c379808178/FLAGdd4a69ce0 [2021-12-15 11:51:38,432 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:51:38,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c [2021-12-15 11:51:38,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d58b53b/4f15a0eeafb8463b9aef17c379808178/FLAGdd4a69ce0 [2021-12-15 11:51:38,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d58b53b/4f15a0eeafb8463b9aef17c379808178 [2021-12-15 11:51:38,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:51:38,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:51:38,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:38,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:51:38,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:51:38,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:38" (1/1) ... [2021-12-15 11:51:38,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad1c920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:38, skipping insertion in model container [2021-12-15 11:51:38,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:38" (1/1) ... [2021-12-15 11:51:38,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:51:38,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:51:40,068 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_label49+token_ring.13.cil-1.c[380593,380606] [2021-12-15 11:51:40,087 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_label49+token_ring.13.cil-1.c[383339,383352] [2021-12-15 11:51:40,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:40,335 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:51:41,007 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_label49+token_ring.13.cil-1.c[380593,380606] [2021-12-15 11:51:41,012 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_label49+token_ring.13.cil-1.c[383339,383352] [2021-12-15 11:51:41,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:41,103 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:51:41,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41 WrapperNode [2021-12-15 11:51:41,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:41,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:41,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:51:41,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:51:41,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,515 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13262 [2021-12-15 11:51:41,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:41,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:51:41,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:51:41,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:51:41,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:51:41,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:51:41,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:51:41,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:51:41,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (1/1) ... [2021-12-15 11:51:41,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:51:41,984 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 11:51:42,004 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 11:51:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:51:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:51:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:51:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:51:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:51:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:51:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:51:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:51:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:51:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:51:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:51:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:51:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:51:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:51:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:51:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:51:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:51:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:51:42,186 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:51:42,188 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:51:46,927 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:51:46,944 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:51:46,944 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:51:46,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:46 BoogieIcfgContainer [2021-12-15 11:51:46,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:51:46,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:51:46,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:51:46,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:51:46,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:51:38" (1/3) ... [2021-12-15 11:51:46,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fb7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:46, skipping insertion in model container [2021-12-15 11:51:46,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:41" (2/3) ... [2021-12-15 11:51:46,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fb7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:51:46, skipping insertion in model container [2021-12-15 11:51:46,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:51:46" (3/3) ... [2021-12-15 11:51:46,953 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.13.cil-1.c [2021-12-15 11:51:46,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:51:46,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:51:46,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:51:46,997 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 11:51:46,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:51:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-15 11:51:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-15 11:51:47,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:51:47,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:51:47,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:51:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:51:47,048 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2021-12-15 11:51:47,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:51:47,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929321391] [2021-12-15 11:51:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:51:47,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:51:47,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:51:47,096 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 11:51:47,100 INFO L158 Benchmark]: Toolchain (without parser) took 8399.27ms. Allocated memory was 117.4MB in the beginning and 792.7MB in the end (delta: 675.3MB). Free memory was 85.4MB in the beginning and 443.9MB in the end (delta: -358.5MB). Peak memory consumption was 316.9MB. Max. memory is 16.1GB. [2021-12-15 11:51:47,101 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 86.0MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:51:47,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2402.48ms. Allocated memory was 117.4MB in the beginning and 197.1MB in the end (delta: 79.7MB). Free memory was 85.0MB in the beginning and 77.3MB in the end (delta: 7.7MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2021-12-15 11:51:47,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 410.71ms. Allocated memory is still 197.1MB. Free memory was 76.4MB in the beginning and 54.3MB in the end (delta: 22.1MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2021-12-15 11:51:47,102 INFO L158 Benchmark]: Boogie Preprocessor took 439.58ms. Allocated memory was 197.1MB in the beginning and 396.4MB in the end (delta: 199.2MB). Free memory was 54.3MB in the beginning and 232.1MB in the end (delta: -177.8MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2021-12-15 11:51:47,103 INFO L158 Benchmark]: RCFGBuilder took 4991.49ms. Allocated memory was 396.4MB in the beginning and 792.7MB in the end (delta: 396.4MB). Free memory was 231.0MB in the beginning and 466.9MB in the end (delta: -235.9MB). Peak memory consumption was 304.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:47,103 INFO L158 Benchmark]: TraceAbstraction took 150.47ms. Allocated memory is still 792.7MB. Free memory was 466.9MB in the beginning and 443.9MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-15 11:51:47,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 86.0MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2402.48ms. Allocated memory was 117.4MB in the beginning and 197.1MB in the end (delta: 79.7MB). Free memory was 85.0MB in the beginning and 77.3MB in the end (delta: 7.7MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 410.71ms. Allocated memory is still 197.1MB. Free memory was 76.4MB in the beginning and 54.3MB in the end (delta: 22.1MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 439.58ms. Allocated memory was 197.1MB in the beginning and 396.4MB in the end (delta: 199.2MB). Free memory was 54.3MB in the beginning and 232.1MB in the end (delta: -177.8MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * RCFGBuilder took 4991.49ms. Allocated memory was 396.4MB in the beginning and 792.7MB in the end (delta: 396.4MB). Free memory was 231.0MB in the beginning and 466.9MB in the end (delta: -235.9MB). Peak memory consumption was 304.1MB. Max. memory is 16.1GB. * TraceAbstraction took 150.47ms. Allocated memory is still 792.7MB. Free memory was 466.9MB in the beginning and 443.9MB in the end (delta: 23.0MB). 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 11:51:47,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_label49+token_ring.13.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 21d4f13e72175539cc78aacb8d1d416269d0755bd0c7a4b3f37d9d8805a7ca70 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:51:48,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:51:48,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:51:48,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:51:48,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:51:48,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:51:48,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:51:48,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:51:48,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:51:48,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:51:48,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:51:48,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:51:48,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:51:48,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:51:48,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:51:48,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:51:48,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:51:48,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:51:48,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:51:48,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:51:48,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:51:48,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:51:48,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:51:48,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:51:48,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:51:48,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:51:48,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:51:48,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:51:48,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:51:48,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:51:48,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:51:48,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:51:48,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:51:48,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:51:48,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:51:48,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:51:48,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:51:48,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:51:48,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:51:48,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:51:48,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:51:48,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:51:48,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:51:48,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:51:48,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:51:48,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:51:48,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:51:48,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:51:48,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:51:48,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:51:48,998 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:51:48,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:51:48,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:51:48,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:51:48,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:51:48,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:51:49,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:51:49,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:51:49,002 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:51:49,003 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:51:49,003 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:51:49,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:51:49,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:51:49,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:51:49,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:51:49,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:51:49,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:51:49,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:51:49,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:49,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:51:49,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:51:49,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:51:49,005 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:51:49,005 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:51:49,007 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:51:49,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:51:49,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:51:49,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:51:49,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:51:49,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21d4f13e72175539cc78aacb8d1d416269d0755bd0c7a4b3f37d9d8805a7ca70 [2021-12-15 11:51:49,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:51:49,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:51:49,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:51:49,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:51:49,298 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:51:49,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c [2021-12-15 11:51:49,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88232dab3/6471af1f613a43d6a997d2a931fc72b5/FLAG6566cced5 [2021-12-15 11:51:50,087 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:51:50,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c [2021-12-15 11:51:50,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88232dab3/6471af1f613a43d6a997d2a931fc72b5/FLAG6566cced5 [2021-12-15 11:51:50,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88232dab3/6471af1f613a43d6a997d2a931fc72b5 [2021-12-15 11:51:50,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:51:50,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:51:50,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:50,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:51:50,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:51:50,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:50" (1/1) ... [2021-12-15 11:51:50,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd2f683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:50, skipping insertion in model container [2021-12-15 11:51:50,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:51:50" (1/1) ... [2021-12-15 11:51:50,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:51:50,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:51:51,455 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_label49+token_ring.13.cil-1.c[380593,380606] [2021-12-15 11:51:51,472 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_label49+token_ring.13.cil-1.c[383339,383352] [2021-12-15 11:51:51,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:51,698 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:51:52,298 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_label49+token_ring.13.cil-1.c[380593,380606] [2021-12-15 11:51:52,301 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_label49+token_ring.13.cil-1.c[383339,383352] [2021-12-15 11:51:52,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:51:52,377 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:51:52,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52 WrapperNode [2021-12-15 11:51:52,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:51:52,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:52,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:51:52,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:51:52,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:52,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:52,815 INFO L137 Inliner]: procedures = 71, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13217 [2021-12-15 11:51:52,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:51:52,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:51:52,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:51:52,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:51:52,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:52,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:52,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:52,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:53,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:53,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:53,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:53,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:51:53,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:51:53,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:51:53,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:51:53,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (1/1) ... [2021-12-15 11:51:53,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:51:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:51:53,254 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 11:51:53,262 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 11:51:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:51:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:51:53,296 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:51:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:51:53,296 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:51:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:51:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:51:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:51:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:51:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:51:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:51:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:51:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:51:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:51:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:51:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:51:53,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:51:53,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:51:53,425 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:51:53,440 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:52:00,010 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:52:00,036 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:52:00,037 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:52:00,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:52:00 BoogieIcfgContainer [2021-12-15 11:52:00,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:52:00,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:52:00,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:52:00,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:52:00,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:51:50" (1/3) ... [2021-12-15 11:52:00,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28963928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:52:00, skipping insertion in model container [2021-12-15 11:52:00,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:51:52" (2/3) ... [2021-12-15 11:52:00,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28963928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:52:00, skipping insertion in model container [2021-12-15 11:52:00,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:52:00" (3/3) ... [2021-12-15 11:52:00,048 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.13.cil-1.c [2021-12-15 11:52:00,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:52:00,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:52:00,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:52:00,104 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 11:52:00,105 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:52:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-15 11:52:00,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-15 11:52:00,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:52:00,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:52:00,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:52:00,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:52:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2021-12-15 11:52:00,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:52:00,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107610477] [2021-12-15 11:52:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:52:00,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:52:00,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:52:00,184 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 11:52:00,193 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 11:52:00,244 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 11:52:00,442 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 11:52:00,443 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 11:52:00,446 INFO L158 Benchmark]: Toolchain (without parser) took 10286.87ms. Allocated memory was 67.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 32.3MB in the beginning and 839.4MB in the end (delta: -807.1MB). Peak memory consumption was 333.7MB. Max. memory is 16.1GB. [2021-12-15 11:52:00,446 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 32.9MB in the beginning and 32.9MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:52:00,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2217.09ms. Allocated memory was 67.1MB in the beginning and 283.1MB in the end (delta: 216.0MB). Free memory was 32.1MB in the beginning and 174.2MB in the end (delta: -142.1MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. [2021-12-15 11:52:00,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 436.74ms. Allocated memory is still 283.1MB. Free memory was 174.2MB in the beginning and 145.1MB in the end (delta: 29.1MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. [2021-12-15 11:52:00,448 INFO L158 Benchmark]: Boogie Preprocessor took 413.69ms. Allocated memory was 283.1MB in the beginning and 572.5MB in the end (delta: 289.4MB). Free memory was 145.1MB in the beginning and 403.0MB in the end (delta: -257.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2021-12-15 11:52:00,448 INFO L158 Benchmark]: RCFGBuilder took 6811.74ms. Allocated memory was 572.5MB in the beginning and 1.2GB in the end (delta: 635.4MB). Free memory was 403.0MB in the beginning and 867.7MB in the end (delta: -464.8MB). Peak memory consumption was 266.1MB. Max. memory is 16.1GB. [2021-12-15 11:52:00,448 INFO L158 Benchmark]: TraceAbstraction took 401.62ms. Allocated memory is still 1.2GB. Free memory was 866.7MB in the beginning and 839.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-15 11:52:00,450 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 50.3MB. Free memory was 32.9MB in the beginning and 32.9MB in the end (delta: 31.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2217.09ms. Allocated memory was 67.1MB in the beginning and 283.1MB in the end (delta: 216.0MB). Free memory was 32.1MB in the beginning and 174.2MB in the end (delta: -142.1MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 436.74ms. Allocated memory is still 283.1MB. Free memory was 174.2MB in the beginning and 145.1MB in the end (delta: 29.1MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 413.69ms. Allocated memory was 283.1MB in the beginning and 572.5MB in the end (delta: 289.4MB). Free memory was 145.1MB in the beginning and 403.0MB in the end (delta: -257.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * RCFGBuilder took 6811.74ms. Allocated memory was 572.5MB in the beginning and 1.2GB in the end (delta: 635.4MB). Free memory was 403.0MB in the beginning and 867.7MB in the end (delta: -464.8MB). Peak memory consumption was 266.1MB. Max. memory is 16.1GB. * TraceAbstraction took 401.62ms. Allocated memory is still 1.2GB. Free memory was 866.7MB in the beginning and 839.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. 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 11:52:00,478 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