./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.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 0c99d18ed16ec352e91351e0f3838a9b2b4652040cea861d46c350d61924e51a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:48:37,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:48:37,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:48:37,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:48:37,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:48:37,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:48:37,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:48:37,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:48:37,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:48:37,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:48:37,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:48:37,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:48:37,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:48:37,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:48:37,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:48:37,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:48:37,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:48:37,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:48:37,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:48:37,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:48:37,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:48:37,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:48:37,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:48:37,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:48:37,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:48:37,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:48:37,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:48:37,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:48:37,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:48:37,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:48:37,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:48:37,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:48:37,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:48:37,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:48:37,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:48:37,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:48:37,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:48:37,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:48:37,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:48:37,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:48:37,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:48:37,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:48:37,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:48:37,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:48:37,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:48:37,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:48:37,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:48:37,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:48:37,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:48:37,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:48:37,918 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:48:37,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:48:37,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:48:37,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:48:37,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:48:37,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:48:37,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:48:37,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:48:37,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:48:37,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:48:37,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:48:37,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:48:37,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:48:37,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:48:37,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:48:37,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:48:37,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:37,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:48:37,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:48:37,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:48:37,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:48:37,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:48:37,924 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:48:37,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:48:37,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:48:37,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:48:37,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c99d18ed16ec352e91351e0f3838a9b2b4652040cea861d46c350d61924e51a [2021-12-15 11:48:38,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:48:38,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:48:38,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:48:38,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:48:38,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:48:38,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c [2021-12-15 11:48:38,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682b6fc3b/3d524ce5dd834861846a50ac54ea05c3/FLAG92d824ca5 [2021-12-15 11:48:38,853 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:48:38,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c [2021-12-15 11:48:38,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682b6fc3b/3d524ce5dd834861846a50ac54ea05c3/FLAG92d824ca5 [2021-12-15 11:48:39,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682b6fc3b/3d524ce5dd834861846a50ac54ea05c3 [2021-12-15 11:48:39,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:48:39,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:48:39,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:39,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:48:39,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:48:39,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:39" (1/1) ... [2021-12-15 11:48:39,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fe1a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:39, skipping insertion in model container [2021-12-15 11:48:39,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:39" (1/1) ... [2021-12-15 11:48:39,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:48:39,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:40,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[380323,380336] [2021-12-15 11:48:40,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[383339,383352] [2021-12-15 11:48:40,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:40,905 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:41,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[380323,380336] [2021-12-15 11:48:41,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[383339,383352] [2021-12-15 11:48:41,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:41,533 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:41,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41 WrapperNode [2021-12-15 11:48:41,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:41,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:41,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:41,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:41,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:41,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:41,852 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2021-12-15 11:48:41,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:41,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:41,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:41,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:41,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:41,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:41,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:41,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:42,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:42,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:42,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:42,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:42,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:42,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:42,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:42,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (1/1) ... [2021-12-15 11:48:42,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:42,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:42,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:48:42,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:48:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:42,541 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:42,542 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:42,543 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:42,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:48:42,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:42,695 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:42,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:48:47,455 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:48:47,505 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:48:47,505 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-15 11:48:47,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:47 BoogieIcfgContainer [2021-12-15 11:48:47,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:48:47,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:48:47,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:48:47,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:48:47,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:39" (1/3) ... [2021-12-15 11:48:47,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da85986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:47, skipping insertion in model container [2021-12-15 11:48:47,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:41" (2/3) ... [2021-12-15 11:48:47,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da85986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:47, skipping insertion in model container [2021-12-15 11:48:47,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:47" (3/3) ... [2021-12-15 11:48:47,539 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-1.c [2021-12-15 11:48:47,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:48:47,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:48:47,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:48:47,622 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:48:47,622 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:48:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-15 11:48:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-15 11:48:47,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:48:47,727 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] [2021-12-15 11:48:47,727 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:48:47,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:48:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-12-15 11:48:47,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:48:47,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896686077] [2021-12-15 11:48:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:48:47,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:48:47,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:48:47,778 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:48:47,782 INFO L158 Benchmark]: Toolchain (without parser) took 8533.89ms. Allocated memory was 113.2MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 73.0MB in the beginning and 885.3MB in the end (delta: -812.3MB). Peak memory consumption was 201.1MB. Max. memory is 16.1GB. [2021-12-15 11:48:47,782 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:48:47,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2284.22ms. Allocated memory was 113.2MB in the beginning and 295.7MB in the end (delta: 182.5MB). Free memory was 73.0MB in the beginning and 158.0MB in the end (delta: -85.0MB). Peak memory consumption was 156.7MB. Max. memory is 16.1GB. [2021-12-15 11:48:47,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 318.25ms. Allocated memory is still 295.7MB. Free memory was 156.9MB in the beginning and 153.4MB in the end (delta: 3.5MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. [2021-12-15 11:48:47,784 INFO L158 Benchmark]: Boogie Preprocessor took 524.36ms. Allocated memory was 295.7MB in the beginning and 612.4MB in the end (delta: 316.7MB). Free memory was 153.4MB in the beginning and 453.3MB in the end (delta: -299.9MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2021-12-15 11:48:47,784 INFO L158 Benchmark]: RCFGBuilder took 5138.11ms. Allocated memory was 612.4MB in the beginning and 1.1GB in the end (delta: 515.9MB). Free memory was 453.3MB in the beginning and 907.3MB in the end (delta: -454.0MB). Peak memory consumption was 397.4MB. Max. memory is 16.1GB. [2021-12-15 11:48:47,784 INFO L158 Benchmark]: TraceAbstraction took 246.87ms. Allocated memory is still 1.1GB. Free memory was 907.3MB in the beginning and 885.3MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 11:48:47,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2284.22ms. Allocated memory was 113.2MB in the beginning and 295.7MB in the end (delta: 182.5MB). Free memory was 73.0MB in the beginning and 158.0MB in the end (delta: -85.0MB). Peak memory consumption was 156.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 318.25ms. Allocated memory is still 295.7MB. Free memory was 156.9MB in the beginning and 153.4MB in the end (delta: 3.5MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 524.36ms. Allocated memory was 295.7MB in the beginning and 612.4MB in the end (delta: 316.7MB). Free memory was 153.4MB in the beginning and 453.3MB in the end (delta: -299.9MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. * RCFGBuilder took 5138.11ms. Allocated memory was 612.4MB in the beginning and 1.1GB in the end (delta: 515.9MB). Free memory was 453.3MB in the beginning and 907.3MB in the end (delta: -454.0MB). Peak memory consumption was 397.4MB. Max. memory is 16.1GB. * TraceAbstraction took 246.87ms. Allocated memory is still 1.1GB. Free memory was 907.3MB in the beginning and 885.3MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:48:47,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.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 0c99d18ed16ec352e91351e0f3838a9b2b4652040cea861d46c350d61924e51a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:48:50,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:48:50,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:48:50,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:48:50,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:48:50,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:48:50,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:48:50,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:48:50,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:48:50,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:48:50,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:48:50,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:48:50,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:48:50,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:48:50,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:48:50,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:48:50,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:48:50,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:48:50,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:48:50,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:48:50,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:48:50,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:48:50,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:48:50,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:48:50,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:48:50,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:48:50,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:48:50,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:48:50,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:48:50,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:48:50,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:48:50,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:48:50,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:48:50,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:48:50,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:48:50,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:48:50,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:48:50,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:48:50,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:48:50,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:48:50,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:48:50,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:48:50,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:48:50,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:48:50,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:48:50,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:48:50,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:48:50,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:48:50,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:48:50,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:48:50,321 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:48:50,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:48:50,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:48:50,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:48:50,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:48:50,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:48:50,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:48:50,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:48:50,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:48:50,323 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:48:50,323 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:48:50,323 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:48:50,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:48:50,323 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:48:50,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:48:50,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:48:50,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:48:50,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:48:50,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:50,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:48:50,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:48:50,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:48:50,325 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:48:50,325 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:48:50,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:48:50,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:48:50,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:48:50,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:48:50,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:48:50,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c99d18ed16ec352e91351e0f3838a9b2b4652040cea861d46c350d61924e51a [2021-12-15 11:48:50,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:48:50,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:48:50,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:48:50,639 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:48:50,639 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:48:50,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c [2021-12-15 11:48:50,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b14f0f1/9b990e7128b74bbeb7d1d10c75cc29e5/FLAGc9de7c894 [2021-12-15 11:48:51,461 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:48:51,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c [2021-12-15 11:48:51,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b14f0f1/9b990e7128b74bbeb7d1d10c75cc29e5/FLAGc9de7c894 [2021-12-15 11:48:51,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8b14f0f1/9b990e7128b74bbeb7d1d10c75cc29e5 [2021-12-15 11:48:51,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:48:51,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:48:51,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:51,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:48:51,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:48:51,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:51,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5179a2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:51, skipping insertion in model container [2021-12-15 11:48:51,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:51" (1/1) ... [2021-12-15 11:48:51,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:48:52,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:48:53,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[380323,380336] [2021-12-15 11:48:53,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[383339,383352] [2021-12-15 11:48:53,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:53,638 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:48:54,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[380323,380336] [2021-12-15 11:48:54,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-1.c[383339,383352] [2021-12-15 11:48:54,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:48:54,307 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:48:54,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54 WrapperNode [2021-12-15 11:48:54,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:48:54,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:54,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:48:54,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:48:54,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:54,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:54,798 INFO L137 Inliner]: procedures = 63, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 12989 [2021-12-15 11:48:54,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:48:54,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:48:54,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:48:54,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:48:54,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:54,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:54,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:54,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:54,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:55,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:55,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:55,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:48:55,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:48:55,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:48:55,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:48:55,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (1/1) ... [2021-12-15 11:48:55,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:48:55,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:48:55,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:48:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:48:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-15 11:48:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-15 11:48:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-15 11:48:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-15 11:48:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-15 11:48:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-15 11:48:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:48:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-15 11:48:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-15 11:48:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-15 11:48:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-15 11:48:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-15 11:48:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-15 11:48:55,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:48:55,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:48:55,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:48:55,427 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:48:55,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:49:01,943 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:49:01,968 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:49:01,969 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-15 11:49:01,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:01 BoogieIcfgContainer [2021-12-15 11:49:01,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:49:01,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:49:01,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:49:01,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:49:01,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:51" (1/3) ... [2021-12-15 11:49:01,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e37ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:01, skipping insertion in model container [2021-12-15 11:49:01,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:54" (2/3) ... [2021-12-15 11:49:01,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e37ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:49:01, skipping insertion in model container [2021-12-15 11:49:01,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:49:01" (3/3) ... [2021-12-15 11:49:01,981 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-1.c [2021-12-15 11:49:01,985 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:49:01,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:49:02,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:49:02,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:49:02,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:49:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-15 11:49:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-15 11:49:02,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:49:02,097 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] [2021-12-15 11:49:02,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:49:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:49:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-12-15 11:49:02,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:49:02,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347989616] [2021-12-15 11:49:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:49:02,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:49:02,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:49:02,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:49:02,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:49:02,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:49:02,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:49:02,387 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:49:02,391 INFO L158 Benchmark]: Toolchain (without parser) took 10468.88ms. Allocated memory was 56.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 18.7MB in the beginning and 1.5GB in the end (delta: -1.5GB). Peak memory consumption was 242.9MB. Max. memory is 16.1GB. [2021-12-15 11:49:02,392 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 28.5MB in the beginning and 28.4MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:49:02,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2384.46ms. Allocated memory was 56.6MB in the beginning and 188.7MB in the end (delta: 132.1MB). Free memory was 18.4MB in the beginning and 81.3MB in the end (delta: -62.8MB). Peak memory consumption was 117.5MB. Max. memory is 16.1GB. [2021-12-15 11:49:02,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 491.09ms. Allocated memory was 188.7MB in the beginning and 339.7MB in the end (delta: 151.0MB). Free memory was 81.3MB in the beginning and 194.3MB in the end (delta: -113.0MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2021-12-15 11:49:02,393 INFO L158 Benchmark]: Boogie Preprocessor took 391.71ms. Allocated memory is still 339.7MB. Free memory was 194.3MB in the beginning and 173.3MB in the end (delta: 21.0MB). Peak memory consumption was 84.9MB. Max. memory is 16.1GB. [2021-12-15 11:49:02,394 INFO L158 Benchmark]: RCFGBuilder took 6781.37ms. Allocated memory was 339.7MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 173.3MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 497.0MB. Max. memory is 16.1GB. [2021-12-15 11:49:02,394 INFO L158 Benchmark]: TraceAbstraction took 415.24ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 11:49:02,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 28.5MB in the beginning and 28.4MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2384.46ms. Allocated memory was 56.6MB in the beginning and 188.7MB in the end (delta: 132.1MB). Free memory was 18.4MB in the beginning and 81.3MB in the end (delta: -62.8MB). Peak memory consumption was 117.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 491.09ms. Allocated memory was 188.7MB in the beginning and 339.7MB in the end (delta: 151.0MB). Free memory was 81.3MB in the beginning and 194.3MB in the end (delta: -113.0MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 391.71ms. Allocated memory is still 339.7MB. Free memory was 194.3MB in the beginning and 173.3MB in the end (delta: 21.0MB). Peak memory consumption was 84.9MB. Max. memory is 16.1GB. * RCFGBuilder took 6781.37ms. Allocated memory was 339.7MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 173.3MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 497.0MB. Max. memory is 16.1GB. * TraceAbstraction took 415.24ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB 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 11:49:02,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable