./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.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_label46+token_ring.15.cil.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 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:49:56,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:49:56,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:49:56,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:49:56,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:49:56,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:49:56,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:49:56,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:49:56,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:49:56,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:49:56,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:49:56,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:49:56,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:49:56,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:49:56,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:49:56,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:49:56,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:49:56,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:49:56,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:49:56,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:49:56,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:49:56,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:49:56,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:49:56,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:49:56,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:49:56,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:49:56,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:49:56,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:49:56,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:49:56,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:49:56,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:49:56,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:49:56,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:49:56,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:49:56,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:49:56,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:49:56,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:49:56,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:49:56,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:49:56,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:49:56,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:49:56,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:49:56,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:49:56,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:49:56,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:49:56,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:49:56,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:49:56,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:49:56,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:49:56,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:49:56,540 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:49:56,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:49:56,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:49:56,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:49:56,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:49:56,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:49:56,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:49:56,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:49:56,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:49:56,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:49:56,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:49:56,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:49:56,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:49:56,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:49:56,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:49:56,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:49:56,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:49:56,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:49:56,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:49:56,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:49:56,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:49:56,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:49:56,544 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:49:56,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:49:56,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:49:56,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:49:56,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e [2021-12-15 11:49:56,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:49:56,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:49:56,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:49:56,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:49:56,802 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:49:56,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2021-12-15 11:49:56,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ed10194/a00d82359f4c42818d4c234a6125a338/FLAGa6c13870a [2021-12-15 11:49:57,684 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:49:57,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2021-12-15 11:49:57,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ed10194/a00d82359f4c42818d4c234a6125a338/FLAGa6c13870a [2021-12-15 11:49:57,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ed10194/a00d82359f4c42818d4c234a6125a338 [2021-12-15 11:49:57,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:49:57,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:49:57,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:49:57,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:49:57,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:49:57,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:57" (1/1) ... [2021-12-15 11:49:57,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95e9bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:49:57, skipping insertion in model container [2021-12-15 11:49:57,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:49:57" (1/1) ... [2021-12-15 11:49:57,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:49:58,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:49:59,776 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_label46+token_ring.15.cil.c[382357,382370] [2021-12-15 11:49:59,796 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_label46+token_ring.15.cil.c[383339,383352] [2021-12-15 11:50:00,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:00,056 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:50:00,792 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_label46+token_ring.15.cil.c[382357,382370] [2021-12-15 11:50:00,795 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_label46+token_ring.15.cil.c[383339,383352] [2021-12-15 11:50:00,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:00,868 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:50:00,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00 WrapperNode [2021-12-15 11:50:00,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:00,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:00,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:50:00,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:50:00,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:00,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,257 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2021-12-15 11:50:01,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:01,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:50:01,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:50:01,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:50:01,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:50:01,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:50:01,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:50:01,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:50:01,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (1/1) ... [2021-12-15 11:50:01,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:01,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:50:01,716 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 11:50:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:50:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:50:01,742 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:50:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:50:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:50:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:50:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:50:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:50:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:50:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:50:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:50:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:50:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:50:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:50:01,729 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 11:50:01,856 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:50:01,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:50:06,806 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:50:06,826 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:50:06,827 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:50:06,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:06 BoogieIcfgContainer [2021-12-15 11:50:06,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:50:06,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:50:06,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:50:06,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:50:06,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:49:57" (1/3) ... [2021-12-15 11:50:06,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4e2319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:06, skipping insertion in model container [2021-12-15 11:50:06,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:00" (2/3) ... [2021-12-15 11:50:06,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4e2319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:06, skipping insertion in model container [2021-12-15 11:50:06,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:06" (3/3) ... [2021-12-15 11:50:06,836 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.15.cil.c [2021-12-15 11:50:06,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:50:06,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:50:06,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:50:06,888 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 11:50:06,889 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:50:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 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 11:50:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-15 11:50:06,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:50:06,952 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 11:50:06,953 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:50:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:50:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-12-15 11:50:06,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:50:06,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221740146] [2021-12-15 11:50:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:50:06,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:50:07,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:50:07,159 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 11:50:07,163 INFO L158 Benchmark]: Toolchain (without parser) took 9277.52ms. Allocated memory was 140.5MB in the beginning and 755.0MB in the end (delta: 614.5MB). Free memory was 103.8MB in the beginning and 570.7MB in the end (delta: -466.9MB). Peak memory consumption was 554.4MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,163 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:50:07,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2983.49ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 103.8MB in the beginning and 75.8MB in the end (delta: 27.9MB). Peak memory consumption was 152.7MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 387.80ms. Allocated memory was 216.0MB in the beginning and 379.6MB in the end (delta: 163.6MB). Free memory was 75.8MB in the beginning and 243.6MB in the end (delta: -167.8MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,180 INFO L158 Benchmark]: Boogie Preprocessor took 422.78ms. Allocated memory is still 379.6MB. Free memory was 243.6MB in the beginning and 216.3MB in the end (delta: 27.3MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,180 INFO L158 Benchmark]: RCFGBuilder took 5149.05ms. Allocated memory was 379.6MB in the beginning and 755.0MB in the end (delta: 375.4MB). Free memory was 216.3MB in the beginning and 207.6MB in the end (delta: 8.7MB). Peak memory consumption was 405.7MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,181 INFO L158 Benchmark]: TraceAbstraction took 329.80ms. Allocated memory is still 755.0MB. Free memory was 207.6MB in the beginning and 570.7MB in the end (delta: -363.1MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2021-12-15 11:50:07,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2983.49ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 103.8MB in the beginning and 75.8MB in the end (delta: 27.9MB). Peak memory consumption was 152.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 387.80ms. Allocated memory was 216.0MB in the beginning and 379.6MB in the end (delta: 163.6MB). Free memory was 75.8MB in the beginning and 243.6MB in the end (delta: -167.8MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 422.78ms. Allocated memory is still 379.6MB. Free memory was 243.6MB in the beginning and 216.3MB in the end (delta: 27.3MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. * RCFGBuilder took 5149.05ms. Allocated memory was 379.6MB in the beginning and 755.0MB in the end (delta: 375.4MB). Free memory was 216.3MB in the beginning and 207.6MB in the end (delta: 8.7MB). Peak memory consumption was 405.7MB. Max. memory is 16.1GB. * TraceAbstraction took 329.80ms. Allocated memory is still 755.0MB. Free memory was 207.6MB in the beginning and 570.7MB in the end (delta: -363.1MB). Peak memory consumption was 45.9MB. 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 11:50:07,222 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_label46+token_ring.15.cil.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 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:50:09,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:50:09,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:50:09,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:50:09,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:50:09,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:50:09,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:50:09,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:50:09,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:50:09,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:50:09,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:50:09,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:50:09,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:50:09,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:50:09,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:50:09,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:50:09,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:50:09,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:50:09,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:50:09,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:50:09,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:50:09,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:50:09,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:50:09,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:50:09,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:50:09,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:50:09,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:50:09,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:50:09,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:50:09,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:50:09,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:50:09,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:50:09,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:50:09,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:50:09,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:50:09,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:50:09,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:50:09,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:50:09,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:50:09,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:50:09,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:50:09,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:50:09,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:50:09,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:50:09,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:50:09,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:50:09,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:50:09,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:50:09,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:50:09,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:50:09,329 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:50:09,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:50:09,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:50:09,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:50:09,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:50:09,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:50:09,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:50:09,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:50:09,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:50:09,331 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:50:09,331 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:50:09,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:50:09,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:50:09,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:50:09,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:50:09,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:50:09,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:50:09,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:50:09,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:09,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:50:09,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:50:09,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:50:09,333 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:50:09,333 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:50:09,333 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:50:09,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:50:09,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:50:09,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:50:09,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:50:09,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e [2021-12-15 11:50:09,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:50:09,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:50:09,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:50:09,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:50:09,617 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:50:09,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2021-12-15 11:50:09,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93cd03628/37331e1d110f46398815d2e5b892bfda/FLAG211c330a4 [2021-12-15 11:50:10,418 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:50:10,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2021-12-15 11:50:10,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93cd03628/37331e1d110f46398815d2e5b892bfda/FLAG211c330a4 [2021-12-15 11:50:10,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93cd03628/37331e1d110f46398815d2e5b892bfda [2021-12-15 11:50:10,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:50:10,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:50:10,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:10,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:50:10,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:50:10,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:10" (1/1) ... [2021-12-15 11:50:10,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385a9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:10, skipping insertion in model container [2021-12-15 11:50:10,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:50:10" (1/1) ... [2021-12-15 11:50:10,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:50:11,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:50:12,367 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_label46+token_ring.15.cil.c[382357,382370] [2021-12-15 11:50:12,382 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_label46+token_ring.15.cil.c[383339,383352] [2021-12-15 11:50:12,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:12,577 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:50:13,433 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_label46+token_ring.15.cil.c[382357,382370] [2021-12-15 11:50:13,435 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_label46+token_ring.15.cil.c[383339,383352] [2021-12-15 11:50:13,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:50:13,511 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:50:13,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13 WrapperNode [2021-12-15 11:50:13,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:50:13,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:13,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:50:13,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:50:13,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:13,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,193 INFO L137 Inliner]: procedures = 71, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13215 [2021-12-15 11:50:14,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:50:14,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:50:14,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:50:14,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:50:14,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:50:14,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:50:14,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:50:14,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:50:14,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (1/1) ... [2021-12-15 11:50:14,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:50:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:50:14,657 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 11:50:14,675 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 11:50:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:50:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:50:14,685 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:50:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:50:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:50:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:50:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:50:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:50:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-15 11:50:14,686 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-15 11:50:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:50:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:50:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:50:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:50:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:50:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:50:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:50:14,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:50:14,846 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:50:14,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:50:21,355 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:50:21,382 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:50:21,382 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-15 11:50:21,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:21 BoogieIcfgContainer [2021-12-15 11:50:21,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:50:21,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:50:21,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:50:21,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:50:21,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:50:10" (1/3) ... [2021-12-15 11:50:21,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4a899a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:21, skipping insertion in model container [2021-12-15 11:50:21,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:50:13" (2/3) ... [2021-12-15 11:50:21,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4a899a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:50:21, skipping insertion in model container [2021-12-15 11:50:21,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:50:21" (3/3) ... [2021-12-15 11:50:21,395 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.15.cil.c [2021-12-15 11:50:21,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:50:21,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:50:21,442 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:50:21,447 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 11:50:21,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:50:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 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 11:50:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-15 11:50:21,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:50:21,499 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 11:50:21,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:50:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:50:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-12-15 11:50:21,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:50:21,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330623594] [2021-12-15 11:50:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:50:21,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:50:21,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:50:21,527 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 11:50:21,574 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 11:50:21,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 11:50:21,794 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 11:50:21,794 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 11:50:21,797 INFO L158 Benchmark]: Toolchain (without parser) took 10844.77ms. Allocated memory was 65.0MB in the beginning and 908.1MB in the end (delta: 843.1MB). Free memory was 29.5MB in the beginning and 533.3MB in the end (delta: -503.9MB). Peak memory consumption was 341.3MB. Max. memory is 16.1GB. [2021-12-15 11:50:21,798 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:50:21,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2558.89ms. Allocated memory was 65.0MB in the beginning and 178.3MB in the end (delta: 113.2MB). Free memory was 29.1MB in the beginning and 75.2MB in the end (delta: -46.1MB). Peak memory consumption was 97.3MB. Max. memory is 16.1GB. [2021-12-15 11:50:21,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 680.96ms. Allocated memory was 178.3MB in the beginning and 356.5MB in the end (delta: 178.3MB). Free memory was 75.2MB in the beginning and 224.7MB in the end (delta: -149.5MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2021-12-15 11:50:21,799 INFO L158 Benchmark]: Boogie Preprocessor took 436.16ms. Allocated memory is still 356.5MB. Free memory was 224.7MB in the beginning and 212.1MB in the end (delta: 12.6MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. [2021-12-15 11:50:21,800 INFO L158 Benchmark]: RCFGBuilder took 6752.18ms. Allocated memory was 356.5MB in the beginning and 908.1MB in the end (delta: 551.6MB). Free memory was 212.1MB in the beginning and 560.6MB in the end (delta: -348.5MB). Peak memory consumption was 303.7MB. Max. memory is 16.1GB. [2021-12-15 11:50:21,800 INFO L158 Benchmark]: TraceAbstraction took 406.92ms. Allocated memory is still 908.1MB. Free memory was 559.6MB in the beginning and 533.3MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:50:21,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2558.89ms. Allocated memory was 65.0MB in the beginning and 178.3MB in the end (delta: 113.2MB). Free memory was 29.1MB in the beginning and 75.2MB in the end (delta: -46.1MB). Peak memory consumption was 97.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 680.96ms. Allocated memory was 178.3MB in the beginning and 356.5MB in the end (delta: 178.3MB). Free memory was 75.2MB in the beginning and 224.7MB in the end (delta: -149.5MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 436.16ms. Allocated memory is still 356.5MB. Free memory was 224.7MB in the beginning and 212.1MB in the end (delta: 12.6MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. * RCFGBuilder took 6752.18ms. Allocated memory was 356.5MB in the beginning and 908.1MB in the end (delta: 551.6MB). Free memory was 212.1MB in the beginning and 560.6MB in the end (delta: -348.5MB). Peak memory consumption was 303.7MB. Max. memory is 16.1GB. * TraceAbstraction took 406.92ms. Allocated memory is still 908.1MB. Free memory was 559.6MB in the beginning and 533.3MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. 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 11:50:21,842 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